Temperature controlled relay 12V - W1209

Item number 11170 Share
Temperature controlled relay 12V - W1209

Description Attachments

This temperature-controlled relay that, as the name suggests, contains a relay that is activated at a preset temperature. The supplied probe, which contains an accurate thermistor, measures the current temperature with an interval of 2Hz. When this temperature is higher or lower than the set temperature, the relay will start. The relay can switch up to 20A!Settings (press and hold SET):P0: Trigger below or above a certain temperature (Cooling / Heating)P1: The number of degrees Celsius between the set temperature and the activation of the relay.P2: Maximum temperatureP3: Minimum temperatureP4: Temperature correction / calibrationP5: Start delay 0 - 10 minutes


Brand information
Brand Opencircuit house brand
Size info
Length49 mm
Width40 mm
Height10 mm
Weight22 g
€ 4,00€ 3,35 Excl. VAT (NL)
Expected delivery date: Tuesday 25 June. ... pieces in stock
Show volume discounts Shipped from € 3,50 (NL) 30 days cooling-off Excellent service
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Customer questions

Q Sweden Simon BerglundIs it possible to connect this to a BMW coolant temp sensor with resistance at the temperature -10c 10.572kohm to +80c 0.359kohm. I would use it to power or switch on the coolant fan Answer this question
Q The Netherlands AlexThe thermistor in this package is now in a fairly thick metal tube, which causes quite a delay in the response measurement speed. Can a thermistor without a housing also be used, which should provide a faster measurement? View 1 answer   |   Answer this question
Q The Netherlands AlexI want to use this to switch OFF a device when a set temperature is exceeded. It looks like there is a relay with a changeover contact, but is only the make contact connected to the PCB screw terminals? View 1 answer   |   Answer this question
Q Mozambique M.Does it come in a sealed housing? Answer this question
Q The Netherlands Mike FleischerHow big is the PCB? Dimensions? View 1 answer   |   Answer this question
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Customer Reviews

The Netherlands
Works exactly as described, easy to adjust. The relay works up to about 7.5 volts, with lower voltage the relay does not switch. Used to switch fans mounted under a radiator.
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The Netherlands
Works well No documentation about the settings.
I first had a defective 12V adapter, which caused the relay, LED and display to flash "0F0". With a good 12V adapter the relay works fine.
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The Netherlands
Works well
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The Netherlands
Great service!
Placed on 
Works perfectly and cheaply
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