{"id":6744,"date":"2026-07-16T23:53:05","date_gmt":"2026-07-16T23:53:05","guid":{"rendered":"https:\/\/mastersolarbd.com\/?post_type=product&#038;p=6744"},"modified":"2026-07-17T18:24:36","modified_gmt":"2026-07-17T18:24:36","slug":"temperature-controller-w1209","status":"publish","type":"product","link":"https:\/\/mastersolarbd.com\/bn\/\u09aa\u09a3\u09cd\u09af\/temperature-controller-w1209\/","title":{"rendered":"Temperature Controller W1209"},"content":{"rendered":"<p>DESCRIPTION<br \/>\nThe W1209 is a low cost yet highly functional self-contained temperature controller module for both heating and cooling applications.<br \/>\nPACKAGE INCLUDES:<br \/>\n W1209 Temperature Controller Module<br \/>\n 45cm (18\u2033)\u00a0 long temperature sensor probe<br \/>\nKEY FEATURES OF W1209 TEMPERATURE CONTROLLER MODULE:<br \/>\n 3-digit display of temperature<br \/>\n Module can operate in a heating or cooling mode of operation<br \/>\n Multiple parameters can be set such as temp trip point, hysteresis and delay.<br \/>\n Waterproof NTC temperature sensor has -30 to +110\u00b0C measurement range with\u00a0 0.1\u00b0C accuracy<br \/>\n Relay switches up to 120VAC @ 10A or 14VDC @ 10A<br \/>\n 12V module operation<br \/>\nThis module measures and displays the temperature and allows you to control power to most types of electrical equipment based on that temperature.\u00a0 A single output relay can be turned ON or turned OFF as temperature rises or lowers past a thermal threshold that you set.\u00a0 You can also set a temperature hysteresis, relay activation delay and thermal limits for the modules operation.<br \/>\nA built in STM8S uC allows you to configure the module using the display and 3 pushbuttons.\u00a0 All settings are saved into non-volatile memory and are preserved during a power cycle.<br \/>\nThe temperature is sensed by a high accuracy waterproof NTC 10K Thermistor that has a range of -30\u00b0C to 110\u00b0C (-22\u00b0F to 230\u00b0F) .\u00a0 The sensor cable is about 18\u2033 long, but it is possible to splice wire to lengthen the cable if needed.<br \/>\nThe relay is rated for up to 120VAC @ 10A and 14VDC @ 10A.\u00a0 When the relay is energized a red LED is lit.\u00a0 \u00a0 It is also possible to use the relay on this module to switch higher power relays if you want to control a lot of power.<br \/>\nModule Power<br \/>\nThe module is powered from 12VDC which is connected to the screw terminal block.\u00a0 This can come from an AC wall adapter or similar power source.<br \/>\nDisplay<br \/>\nThe module has a 3-digit display composed of 0.28\u2033 high red 7-segment displays.<br \/>\nThe module will always display the current temperature measurement by default.\u00a0 Once you stop pushing buttons, after about 5 seconds the display will default back to displaying the temperature.<br \/>\nIf you apply power to the module without the sensor attached, it will display \u2018LLL\u2018.\u00a0 If you plug in the sensor, the current temperature will be displayed which is generally in the 20-25C range.<br \/>\nButtons<br \/>\nThere are 3 buttons on the module that you can fiddle with.<br \/>\n SET\u00a0= Momentary press sets trigger temperature.\u00a0 Long press enters parameter setting mode<br \/>\n \u2018+\u2019\u00a0=\u00a0 \u00a0 Increment setting<br \/>\n \u2018-\u2018\u00a0=\u00a0 \u00a0 \u00a0Decrement setting<br \/>\nSetting Trigger Temperature<br \/>\nTo set the trigger temperature which is the temperature that you want something to happen, press the\u00a0SET\u00a0button and the display will start flashing.\u00a0 The value being displayed is the trigger temperature.\u00a0 As shipped, this will be set to\u00a028C.<br \/>\nUsing the\u00a0+\/-\u00a0buttons, the value can be incremented or decremented in\u00a00.1C\u00a0steps.\u00a0 Holding one of these buttons down will fast increment\/decrement the value.<br \/>\nPressing the\u00a0SET\u00a0button saves the value that you have set and returns to the temperature display.\u00a0 Alternatively if you stop pressing buttons rather than pressing SET, after a 5-8 second delay the value will be saved and the display will revert back to the temperature display on its own.<br \/>\nSETTING PARAMETERS<br \/>\nBecause the user interface is limited to a 3-digit display and 3 pushbuttons, setting parameters can seem a little daunting at first, but it is actually quite easy to use as explained in this section.<br \/>\nTo enter the parameter setting mode, you long press the\u00a0SET\u00a0button for about 3 seconds.\u00a0 When the button is released the display will show \u2018P0\u2018 which is the first parameter setting.\u00a0 You may find that you need to long press the button twice before\u00a0P0\u00a0is displayed.\u00a0 Once in parameter setting mode, pressing the\u00a0+\/-\u00a0keys allows you to scroll between each of the parameters that can be set.<br \/>\nThere are 7 parameters that can be programmed into the module:<br \/>\n P0\u00a0= (Heat \/ Cool) sets whether the relay is energized or de-energized when trigger temperature is reached.<br \/>\n P1\u00a0= (Hysteresis) sets difference in degrees between the Trigger temp and when relay changes state<br \/>\n P2\u00a0= (Max Temp) sets the maximum Trigger temp that can be set<br \/>\n P3\u00a0= (Min Temp) sets the minimum Trigger temp that can be set<br \/>\n P4\u00a0= (Temp Correction) sets an offset to use for the displayed value<br \/>\n P5\u00a0= (Delay) sets a time delay between when the Trigger temp is reached and when the relay is switched<br \/>\n P6\u00a0= (Alarm) sets a high temperature \u2018alarm\u2019 trip point<br \/>\nP0 (Heat \/ Cool)<br \/>\nSets whether the relay is energized or de-energized when the trigger temperature has been reached.<br \/>\nLong press\u00a0SET\u00a0to enter\u00a0P0\u00a0parameter setting mode<br \/>\nPressing\u00a0SET\u00a0now cycles between\u00a0C\u00a0and\u00a0H.<br \/>\nC\u00a0(default) = Cool Mode.\u00a0 The relay will energize when the temperature is reached.\u00a0 This is typically used to turn on a cooling device such as a fan.<br \/>\nH\u00a0= Heat Mode.\u00a0 The relay will de-energize when the temperature is reached.\u00a0 This is typically used to to turn off a heating device such as a heater.<br \/>\nAfter no button pushes for 5-8 seconds, the setting is saved and the display reverts back to displaying the current temperature.<br \/>\nP1 (Hysteresis)<br \/>\nHysteresis refers to how much change in temperature must occur before the relay will change again state.\u00a0 For instance, if a heater is turned OFF at 30\u00b0C and the hysteresis is set to 2\u00b0C, the temperature must fall to 28\u00b0C before the relay is re-energized and the heater is turned back on.<br \/>\nThis can be useful to avoid constantly triggering the device on and off (oscillating) right around the trigger temperature.\u00a0 This is how home thermostats typically work since it is hard on home heating and cooling systems to be constantly cycled on and off.\u00a0 On the other hand, something like an aquarium heater is fine to be operated with no hysteresis in order to hold as constant of a temperature as possible.<br \/>\nLong press\u00a0SET\u00a0to enter parameter setting mode, then\u00a0+\/-\u00a0to reach\u00a0P1.<br \/>\nPressing\u00a0SET\u00a0now displays the hysteresis in \u00b0C.\u00a0 Default setting is\u00a02.0\u00b0C<br \/>\nPress the\u00a0+\/-\u00a0buttons to set the desired hysteresis or 0.0 if no hysteresis is wanted.<br \/>\nAfter no button pushes for 5-8 seconds, the setting is saved and the display reverts back to displaying the current temperature.<br \/>\nP2 (MAX Temp)<br \/>\nThis parameter limits the maximum Trigger temperature that can be set.\u00a0 It can be used as a safety stop to avoid an excessively high temperature from being set by a user of the module.\u00a0\u00a0If you are controlling an frog terrarium heater for your kid for instance, setting this to something like 30\u00b0C may just save Kermits life if buttons get randomly pushed.<br \/>\nLong press\u00a0SET\u00a0to enter parameter setting mode, then\u00a0+\/-\u00a0to reach\u00a0P2.<br \/>\nPressing\u00a0SET\u00a0now displays the maximum temperature that can be set in \u00b0C.\u00a0 Default setting is\u00a0110\u00b0C.<br \/>\nPress the\u00a0+\/-\u00a0buttons to set the desired maximum temperature setting or leave at 110\u00b0C for maximum range.<br \/>\nAfter no button pushes for 5-8 seconds, the setting is saved and the display reverts back to displaying the current temperature.<br \/>\nP3 (MIN Temp)<br \/>\nThis parameter limits the minimum Trigger temperature that can be set.\u00a0 It can be used as a safety stop to avoid an excessively low temperature from being set by a user of the module.<br \/>\nLong press\u00a0SET\u00a0to enter parameter setting mode, then\u00a0+\/-\u00a0to reach\u00a0P3.<br \/>\nPressing\u00a0SET\u00a0now displays the minimum temperature that can be set in \u00b0C.\u00a0 Default setting is\u00a0-30\u00b0C.<br \/>\nPress the\u00a0+\/-\u00a0buttons to set the desired maximum temperature setting or leave at -30\u00b0C for maximum range.<br \/>\nAfter no button pushes for 5-8 seconds, the setting is saved and the display reverts back to displaying the current temperature.<br \/>\nP4 (Temp Correction)<br \/>\nThis parameter provides an offset (either positive or negative) to the displayed temperature value.\u00a0 This feature can be used to match the reading to another device or if you need to make a correction due to an error induced by lengthening the sensor cable.<br \/>\nLong press\u00a0SET\u00a0to enter parameter setting mode, then\u00a0+\/-\u00a0to reach\u00a0P4.<br \/>\nPressing\u00a0SET\u00a0now displays the current offset in \u00b0C.\u00a0 Default offset is\u00a00.0\u00b0C.<br \/>\nPress the\u00a0+\/-\u00a0buttons to set the desired offset in temperature to be used.<br \/>\nAfter no button pushes for 5-8 seconds, the setting is saved and the display reverts back to displaying the current temperature.<br \/>\nP5 (Delay)<br \/>\nThis parameter provides a delay between when the Trigger temperature is reached and when the relay is energized or de-energized.\u00a0 This setting can range from 0-10 minutes in 1 minute increments.<br \/>\nLong press\u00a0SET\u00a0to enter parameter setting mode, then\u00a0+\/-\u00a0to reach\u00a0P5.<br \/>\nPressing\u00a0SET\u00a0now displays the current delay.\u00a0 Default is\u00a00.<br \/>\nPress the\u00a0+\/-\u00a0buttons to set the desired delay to be used.<br \/>\nAfter no button pushes for 5-8 seconds, the setting is saved and the display reverts back to displaying the current temperature.<br \/>\nP6 (Alarm)<br \/>\nThis parameter provides a\u00a0 high temperature alarm.\u00a0 When the set temperature is reached, the relay is deactivated and the display shows \u2018HHH\u2018 until the temperature goes below the alarm set-point.<br \/>\nLong press\u00a0SET\u00a0to enter parameter setting mode, then\u00a0+\/-\u00a0to reach\u00a0P6.<br \/>\nPressing\u00a0SET\u00a0now displays the current alarm setting.\u00a0 Default is\u00a0OFF.<br \/>\nPress the\u00a0+\/-\u00a0buttons to turn the alarm\u00a0ON\u00a0or\u00a0OFF.<br \/>\nPressing the\u00a0SET\u00a0button again now enters the alarm temperature setting mode.\u00a0 Default is \u201800\u2018.\u00a0 Range is 0-110.<br \/>\nPress the\u00a0+\/-\u00a0buttons to enter the desired alarm temperature.<br \/>\nAfter no button pushes for 5-8 seconds, the setting is saved and the display reverts back to displaying the current temperature.<br \/>\nMODULE CONNECTIONS<br \/>\n1\u00d72 XH2.54 White Connector<br \/>\nThe temperature sensor plugs into the white connector.\u00a0 It is keyed and will only go in one way though the orientation does not matter.<br \/>\n1 x 4 Screw Terminal Block<br \/>\n GND\u00a0=\u00a0 Ground for the module.\u00a0 Connect to 12VDC supply ground<br \/>\n +12V=\u00a0 \u00a0Power for the module.\u00a0 Connect to 12VDC.<br \/>\n K1\u00a0=\u00a0 \u00a0 \u00a0 \u00a0Relay switch contact 1<br \/>\n K0\u00a0=\u00a0 \u00a0 \u00a0 Relay switch contact 2<br \/>\nThe relay switch contacts are interchangeable.\u00a0 One side should connect to the power for the load which can either be AC or DC and the other side should connect to the load itself.<br \/>\nOUR EVALUATION RESULTS:<br \/>\nThis is a very commonly used module for temperature control and for good reason.\u00a0 It packs a lot of functionality into a small inexpensive package and is one of our favorite modules to use.<br \/>\nAlthough we love using uCs to monitor and control widgets using custom software as much as the next person, sometimes you just want something to get the job done and do it well and these modules fit that bill nicely.\u00a0 As an example I am using one of these modules coupled with a Peltier cooler module to control the temperature for my wine closet.<br \/>\nWe have tested these modules at the full rated 120VAC @ 10A as well as 12VDC @10A without any issues noted.\u00a0 At the full 10A, the relay does get fairly warm so keeping current under about 8A will help to ensure a good service life.<br \/>\nStated accuracy is \u00b10.1\u00b0C which seems somewhat optimistic.\u00a0 Out of the box, the accuracy is closer to\u00a0\u00b10.5\u00b0C which is still pretty good.\u00a0 One nice feature is the temperature correction parameter that can be used to calibrate the unit against a reference thermometer if greater accuracy is required.<br \/>\nIf using this module to switch AC power, you may want to pick up one of the enclosures below to provide some electrical insulation.<br \/>\nBEFORE THEY ARE SHIPPED, THESE MODULES ARE:<br \/>\n Inspected<br \/>\n Basic temperature measurement and relay operation verified<br \/>\n Packaged in a resealable high quality ESD bag for protection and easy storage.<br \/>\nNotes:\u00a0<br \/>\n Some relays show a rating misprint of 14VAC when it should be 14VDC. \u00a0 This is a misprint only and does not affect the performance of the part.<br \/>\nTECHNICAL SPECIFICATIONS<br \/>\nTemperature Control<br \/>\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 Temperature Range<br \/>\n-30 ~ 110\u00b0C<br \/>\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0Resolution<br \/>\n-9.9 to 99.9\u00b0C<br \/>\n0.1\u00b0C<br \/>\nOther temperatures<br \/>\n1\u00b0C<br \/>\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0Accuracy<br \/>\n0.1\u00b0C<br \/>\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 Thermal Sensor<br \/>\n\u00a0NTC 10K Thermistor<br \/>\nRelay Maximum Ratings<br \/>\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0VAC<br \/>\n120VAC<br \/>\n10A<br \/>\n240VAC<br \/>\n5A<br \/>\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 VDC<br \/>\n0-14VDC<br \/>\n10A<br \/>\nOperating Ratings<br \/>\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 DC Power Input<br \/>\n12VDC<br \/>\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0Operating Current<br \/>\nRelay inactive<br \/>\n&lt;30mA<br \/>\nRelay activated<br \/>\n&lt; 80mA<br \/>\nDimensions<br \/>\nL x W x H<br \/>\n48 x 41 x 16mm (1.9 x 1.6 x 0.6\u2033)<br \/>\nTemperature probe length<br \/>\n45cm (18\u2033)<br \/>\nFURTHER READING<br \/>\nThese modules use the STM8S microcontroller which has pretty good software support.\u00a0 Given that this module sensor input is based on a resistive type sensor, the module can potentially be connected to other similar sensors such as LDR light, strain or angle sensors.<br \/>\nIf you are a hacker type, more info on the module along with details on reprogramming the board can be found on the GitHub site<\/p>","protected":false},"excerpt":{"rendered":"<p>DESCRIPTION The W1209 is a low cost yet highly functional self-contained temperature controller module for both heating and cooling applications. PACKAGE INCLUDES: W1209 Temperature Controller Module 45cm (18\u2033)\u00a0 long temperature sensor probe KEY FEATURES OF W1209 TEMPERATURE CONTROLLER MODULE: 3-digit display of temperature Module can operate in a heating or cooling mode of operation Multiple [&hellip;]<\/p>\n","protected":false},"featured_media":6818,"comment_status":"open","ping_status":"closed","template":"","meta":{"googlesitekit_rrm_CAowh6rGDA:productID":"","site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}}},"product_brand":[],"product_cat":[318],"product_tag":[],"class_list":["post-6744","product","type-product","status-publish","has-post-thumbnail","product_cat-sensor-modules","desktop-align-left","tablet-align-left","mobile-align-left","first","instock","sale","taxable","shipping-taxable","purchasable","product-type-simple"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Temperature Controller W1209 - Master Solar BD \u09ae\u09be\u09b8\u09cd\u099f\u09be\u09b0 \u09b8\u09cb\u09b2\u09be\u09b0 \u09ac\u09bf\u09a1\u09bf<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/mastersolarbd.com\/bn\/\u09aa\u09a3\u09cd\u09af\/temperature-controller-w1209\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Temperature Controller W1209 - Master Solar BD \u09ae\u09be\u09b8\u09cd\u099f\u09be\u09b0 \u09b8\u09cb\u09b2\u09be\u09b0 \u09ac\u09bf\u09a1\u09bf\" \/>\n<meta property=\"og:description\" content=\"DESCRIPTION The W1209 is a low cost yet highly functional self-contained temperature controller module for both heating and cooling applications. PACKAGE INCLUDES: W1209 Temperature Controller Module 45cm (18\u2033)\u00a0 long temperature sensor probe KEY FEATURES OF W1209 TEMPERATURE CONTROLLER MODULE: 3-digit display of temperature Module can operate in a heating or cooling mode of operation Multiple [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/mastersolarbd.com\/bn\/\u09aa\u09a3\u09cd\u09af\/temperature-controller-w1209\/\" \/>\n<meta property=\"og:site_name\" content=\"Master Solar BD \u09ae\u09be\u09b8\u09cd\u099f\u09be\u09b0 \u09b8\u09cb\u09b2\u09be\u09b0 \u09ac\u09bf\u09a1\u09bf\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/p\/Master-Solar-BD----100095014707096\/\" \/>\n<meta property=\"article:modified_time\" content=\"2026-07-17T18:24:36+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/mastersolarbd.com\/wp-content\/uploads\/2025\/08\/70bcc3c7-39bd-4f53-a8ca-85677e7ac57c.png\" \/>\n\t<meta property=\"og:image:width\" content=\"631\" \/>\n\t<meta property=\"og:image:height\" content=\"607\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"10 \u09ae\u09bf\u09a8\u09bf\u099f\" \/>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Temperature Controller W1209 - Master Solar BD \u09ae\u09be\u09b8\u09cd\u099f\u09be\u09b0 \u09b8\u09cb\u09b2\u09be\u09b0 \u09ac\u09bf\u09a1\u09bf","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/mastersolarbd.com\/bn\/\u09aa\u09a3\u09cd\u09af\/temperature-controller-w1209\/","og_locale":"en_US","og_type":"article","og_title":"Temperature Controller W1209 - Master Solar BD \u09ae\u09be\u09b8\u09cd\u099f\u09be\u09b0 \u09b8\u09cb\u09b2\u09be\u09b0 \u09ac\u09bf\u09a1\u09bf","og_description":"DESCRIPTION The W1209 is a low cost yet highly functional self-contained temperature controller module for both heating and cooling applications. PACKAGE INCLUDES: W1209 Temperature Controller Module 45cm (18\u2033)\u00a0 long temperature sensor probe KEY FEATURES OF W1209 TEMPERATURE CONTROLLER MODULE: 3-digit display of temperature Module can operate in a heating or cooling mode of operation Multiple [&hellip;]","og_url":"https:\/\/mastersolarbd.com\/bn\/\u09aa\u09a3\u09cd\u09af\/temperature-controller-w1209\/","og_site_name":"Master Solar BD \u09ae\u09be\u09b8\u09cd\u099f\u09be\u09b0 \u09b8\u09cb\u09b2\u09be\u09b0 \u09ac\u09bf\u09a1\u09bf","article_publisher":"https:\/\/www.facebook.com\/p\/Master-Solar-BD----100095014707096\/","article_modified_time":"2026-07-17T18:24:36+00:00","og_image":[{"width":631,"height":607,"url":"https:\/\/mastersolarbd.com\/wp-content\/uploads\/2025\/08\/70bcc3c7-39bd-4f53-a8ca-85677e7ac57c.png","type":"image\/png"}],"twitter_card":"summary_large_image","twitter_misc":{"Est. reading time":"10 \u09ae\u09bf\u09a8\u09bf\u099f"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":["WebPage","ItemPage"],"@id":"https:\/\/mastersolarbd.com\/product\/temperature-controller-w1209\/","url":"https:\/\/mastersolarbd.com\/product\/temperature-controller-w1209\/","name":"Temperature Controller W1209 - 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