What's in the box:

W1209 Blue LED Digital Temperature Controller Board Micro Thermostat Electronic Temp Control 12V DC Sensor Module Switch with One-channel Relay and Waterproof (Standard)

These are popular temperature controllers with waterproof probes, which can define your temperature setpoint and the relay is opened/closed when the threshold is crossed. High precision temperature controller, temperature control switch, miniature temperature control board, probe. Multiple modes to choose.

Features:
Digital display intelligent temperature controller XH-W1209.
Blue LED shows numbers more clearly.
High precision temperature controller, temperature control switch, miniature temperature control board, probe.
Resolution is 0.1? when temperature is -9.9~99.9 ?, other temperature segment is 1?.
Widely used in the hatching area, equipment case, air conditioning system, temperature control protection and other fields.
Lightweight, small size and easy to use.

Specifications:
LED color: blue
Temperature range: -50-110?
Temperature control mode: ON / OFF
Resolution at -9.9 to 99.9?: 0.1?
Resolution at all other temperatures: 1?
Control accuracy: 0.1?
Hysteresis accuracy: 0.1?
Refresh rate: 0.5 seconds
High temperature protection: 0-110?
Supply voltage: DC 12V
Static current: 35mA, attract current 65mA
Measurement input: NTC (10K 0.5%) waterproof sensor
Operating temperature: -10 ~ 60?
Operating humidity: 20% -85%
Item size: 4.85 * 4.01 * 1.58cm / 1.91 * 1.58 * 0.62in
Item weight: 19.3g / 0.68oz
Package weight: 22g / 0.78oz
Package size: 5.5 * 5 * 2.5cm / 2.17 * 1.97 * 0.98in

How to use:
Connect the power supply and the load, you can supply to the controller.
It displayed as a measured temperature.
Press the "SET" button, the display flashes the temperature;
Press " + or - " to set the desired temperature (long press " + or - " to quickly increase or decrease);
After setting press SET to confirm return;
The controller automatically performs the relay by setting off!

Lights, LED status descriptions:
Indicator: "Off" The relay is switched off, "Always"indicate the relay is closed.
LED: Shows "LL" is the sensor open, showing "HH" is out of range, the thermostat will be forced to close the relay, the display, as high temperature protection.

Function Setting Table:
?long press "SET" to enter into setting

When the Thermostat is power off, long press "- or +", you can restore the factory settings

Package list:
1 * W1209 Digital Temperature Controller Board