The W1209 is a Mini Thermostat Temperature Controller Switch. It is la ow cost 12 volt Temperature controller with 7-segment display and a 3 switch keypad for setting temperature and other parameters. A NTC thermister is used for temperature sensing and has a accuracy of 0.1 C. This is a very popular temperature controller with numerous tutorials, and guides available on the internet on how to use it.

Features

Small size, high quality temperature controller, with a wide temperature measuring range, -50~+110 Degree Centigrade
Includes a large and clear LED display for better readability
Multiple functions, such as Heating and Cooling control, Temperature Calibration function, Delay protection function
All parameters can be set to default setting after short circuit
Can be used for domestic freezer, water tanks, refrigerator, industrial chiller, boiler, steamer, industrial equipments and other temperature-controlled systems
Supply voltage: DC 12V
Current Consumption: 35mA to 65 mA
Output voltage: DC 12V
Max Switching Load: 240V 10A
Temperature Sensor: NTC (10K 0.5%) Waterproof Sensor
Environmental requirements: -10 ~ 60°C, Humidity 20% ~ 85%
Dimensions: 48 x 40mm
Cable length: About 52 cm
Temperature control mode: ON / OFF
Temperature range: -50 ~ +110°C
Control accuracy: 0.1°C
Refresh rate: 0.5S
High temperature protection: 0 ~ 110°C
Resolution: When temperature is 0.1°C, the resolution is -9.9~99.9, other temperature segment is 1°C