Digital thermostat W1209

Product Description:

The W1209 is a thermostat controller module that can manage the power supply of various types of electrical equipment based on the temperature detected by the sensor.

This product should be connected to relays or very low-power loads. Using it with high-power loads without a proper relay will lead to damage. Connecting it directly to a high-power device without using a specific relay will void the warranty.

Error Codes:

• 888: Sensor is not connected;
• HHH: Detected temperature exceeds the upper limit set at P2;
• LLL: Detected temperature is below the lower limit set at P3;
• ---: Over-temperature alarm, the thermostat will forcibly disconnect the relay;

Technical Specifications:

• Power supply voltage: DC 12V
• Display color: Red
• Temperature range: -50 ~ 110 ℃
• Resolution: 0.1 ℃ between -9.9 ~ 99.9 ℃
• Accuracy: 0.1 ℃;
• Control accuracy: 0.1 ℃;
• Hysteresis accuracy: 0.1 ℃;
• Refresh rate: 0.5 S;
• Over-temperature protection: 0 ~ 110 ℃;
• Output: 1-channel relay, max. 20A/16VDC, 10A/120VAC, 5A/240VAC
• Probe: NTC thermistor (10K 0.5%) with insulation;
• Operating environment: -10 ~ 60 ℃, Humidity 20% - 85%;
• Dimensions: 48 * 40mm;
• Power consumption: ≤35 mA in standby

By pressing the SET button on the display, the set reference temperature will flash. This is the temperature the module will use during operation. It can be adjusted using the "+" and "-" buttons.

Enter menu -> press and hold the SET button (approx. 2 sec.) until P0 appears on the display.
Exit menu -> press and hold the SET button (approx. 2 sec.) until the sensor-detected temperature appears on the display.
Parameter settings:

Connection Example:

Package Contents:

1 x W1209 digital thermostat module