The W1209 is an incredibly low cost yet highly functional thermostat controller. With this module  you can intelligently control power to most types of electrical device(like poultry egg hatch incubator) based on the temperature sensed by the included high accuracy NTC temperature sensor. Although this module has an embedded microcontroller no programming knowledge is required. 3 tactile switches allow for configuring various parameters including on & off trigger temperatures. The on board relay can switch up to a maximum of 240V AC at 5A or 14V DC at 10A. The current temperature is displayed in degrees Centigrade via its 3 digit seven segment display and the current relay state by an on board LED. 

Note: This module uses on-board non-volatile memory to store changes made to its settings. Therefore any changes made will be saved even if power it removed from the module.

Specification:

Temperature Control Range: -50 ~ 110 C

Resolution at -9.9 to 99.9: 0.1 C

Resolution at all other temperatures: 1 C

Measurement Accuracy: 0.1 C

Control Accuracy: 0.1 C

Refresh Rate: 0.5 Seconds

Input Power (DC): 12V

Measuring Inputs: NTC (10K 0.5%)

Waterproof Sensor: 0.5M

Output: 1 Channel Relay Output, Capacity: 10A

Power Consumption

Static Current: <=35mA

Current: <=65mA

Environmental Requirements

Temperature: -10 ~ 60 C

Humidity: 20-85%

Dimensions 48mm x 40mm x 14mm

Weight 20 gm