Description: 1. The W1209 is a digital temperature controller thermostat module designed for precise temperature control in various applications such as greenhouses, aquariums, and laboratory equipment. 2. Temperature Range: It supports a wide temperature range of -40°C to +85°C (-40°F to 185°F), making it suitable for various climate control needs. 3. Digital Interface: The module features a digital interface, allowing easy connection and integration with other IoT systems or automation projects via serial communication (RS-232). 4. Multiple Alarm Settings: W1209 offers multiple alarm settings: low temperature alarm, high temperature alarm, and power failure alarm, enabling users to receive timely notifications of temperature deviations or power loss. 5. Heating Element Control: The digital thermostat includes an internal heating element relay that enables precise control over the connected heater, ensuring optimal energy usage and accurate temperature regulation. 6. Adjustable Setpoint: Use
| Specification | Details |
|---|---|
| Temperature Range | -20°C to 110°C (operating) -40°C to 125°C (storage) |
| Accuracy | ±0.3°C (typical) ±1.5°C (max) |
| Resolution | 0.1°C (8-bit DAC output) |
| Operating Voltage | 6V to 35V (recommended: 9-24V DC) |
| Current Consumption | Typical: 50mA Max: 150mA |
| Communication Mode | UART (serial communication) supports software selectable baud rates up to 9600 bps |
| Thermostat Mode | Analog output (thermistor-based) or digital input (e.g. from a temperature sensor) |
| Analog Output | 4-20mA 1-5V (software selectable) |
| Thermal Protection | Built-in thermal protection circuitry |
| Dimensions | 38mm x 27.6mm x 13.8mm (L x W x H) |
| Weight | Approximately 45g |
