W1209 Temperature controller.

The W1209 Mini thermostat Temperature controller is a 12-volt Temperature controller with a 7-segment display and 3 switch keypad for setting temperature and other parameters. An NTC thermistor is used for temperature sensing and has an accuracy of 0.1 C. Ideal for controlling a heating element at a specific set temperature.

W1209 Temperature controller Specification:

Supply voltage: DC 12V (MAX) if spikes higher than 12V add an extra Buck converter for smoothing.
Static current: 35MA, attract current 65MA
Output power: 10A relay
Measurement input: NTC (10K 0.5%) Waterproof Sensor
Environmental requirements: -10 ~ 60C, Humidity 20% ~ 85%
Dimensions: 48 x 40mm
Cable length: About 52 cm
Temperature control mode: ON / OFF
Temperature range: -50 ~ +110C
Control accuracy: 0.1C
Hysteresis accuracy: 0.1C
Refresh rate: 0.5S
High temperature protection: 0 ~ 110C
Resolution: When the temperature is 0.1C, the resolution is -9.9~99.9, other temperature segment is 1C

Manual available here

W1209 Temperature controller Settings video