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Experience superior temperature control with the W1209 12V Digital Thermostat Switch Sensor. This versatile module efficiently manages a range from -50°C to +110°C, ensuring precise operation for heaters, coolers, or fans. Easy to set up, it requires no programming knowledgeâsimply use the intuitive buttons to customize temperature thresholds. The included high-accuracy NTC sensor guarantees optimal performance, while the display shows real-time temperatures and relay status. Perfect for DIY projects, this 2-pack ensures you're fully equipped to handle temperature regulation with ease. Enjoy FREE USPS shipping from our Fort Collins, Colorado warehouse! Get yours today!
Electronics for IoT, Prototyping & DIY
W1209 12V -50-110°C Digital Thermostat Temperature Control Switch Sensor 2 Pack
Experience superior temperature control with the W1209 12V Digital Thermostat Switch Sensor. This versatile module efficiently manages a range from -50°C to +110°C, ensuring precise operation for heaters, coolers, or fans. Easy to set up, it requires no programming knowledge—simply use the intuitive buttons to customize temperature thresholds. The included high-accuracy NTC sensor guarantees optimal performance, while the display shows real-time temperatures and relay status. Perfect for DIY projects, this 2-pack ensures you're fully equipped to handle temperature regulation with ease. Enjoy FREE USPS shipping from our Fort Collins, Colorado warehouse! Get yours today!
W1209 12V -50°C to +110°C Digital Thermostat Temperature Control Switch Sensor Module
2 Pieces
The W1209 is a low cost yet highly functional thermostat controller. This module intelligently controls power to most types of electrical devices based on the temperature sensed by the included high accuracy NTC remote temperature sensor.The cooler, heater or fan is connected to a power supply (either DC or AC) through the relay contacts K0 and K1, and the temperature on/off setpoints are programmed into the W1209 using the onboard Set, Increase and Decrease buttons and display. The relay contacts are then open and closed, acting as a power switch for the cooler/heater, based on the temperature measuredby the NTC temperature sensor (included with the module) and the setpoints programmed into the W1209 controller.
The module is powered by a DC power supply or battery in the range of 9V to 12V.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 20A at 14V DC, 16A at 24V DC, or 7A at 125V AC. The current temperature is displayed in degrees Centigrade via its 3 digit seven segment display and the current relay state by an on-board Control Range: -50 C to +110 C(NOTE: All temperatures are in Celsius, not Fahrenheit)
Resolution at -9.9 to 99.9: 0.1 CResolution at all other temperatures: 1 CMeasurement Accuracy: 0.1 CControl Accuracy: 0.1 CRefresh Rate: 0.5 SecondsInput Support Power (DC): 9V minimum to 12V maximum. The maximum current draw is 65mA (operates the module, does not power the load).
NOTE: The maximum input support voltage should not exceed 12V. In applications such as an automobile or RV where the battery voltage can exceed 12V, a regulator circuit such as a 1N5349A zener diode and a series resistor in the range of 20 Ohm 1W should be used to limit the voltage to 12V. Alternately, a12V to 9V buck voltage converterwith the input to the converter connected to the battery and the output to the W1209 will provide a stable 9V DC supply for the W1209.Measuring Input: NTC (10K 0.5%)Waterproof Sensor: 0.3M cableProbe tip dimensions: 20mm long x 4mm diameterOutput: 1 Channel Relay Output, Capacity: 20A at 14V DC, 16A at 24V DC, or 7A at 125V ACPower Consumption:
- Static Current: <=35mA
- Maximum Operating Current: <=65mA
Environmental Requirements:
- Temperature: -10 ~ 60 C
- Humidity: 20-85%
Dimensions & Weight:
- 48mm x 40mm x 14mm (1.9" x 1.6" x 0.6") (LxWxH)
- Weight: 19 grams (Controller - 16 grams; temperature sensor and cable - 3 grams)
The display defaults to showing the measured temperature.Short press the "SET" button and then press "+" and "-" buttons to raise or lower the temperature setpoint.Long press the “SET” button to activate the menu in order to change the P0 through P6 parameters listed in the Settings Chart below.The setpoint and all parameter settings are stored in nonvolatile memory and will be retained if power to the controller is turned off.
Settings Chart:Code: Description / Range / Default ValueP0: Set Heating or Cooling Mode / C/H / CP1: HysteresisSet / 0.1C - 15C / 2CP2: Upper Temperature Limit / 110C / 110CP3: Lower Temperature Limit / -50C / -50CP4: Temperature Calibration / -7.0C ~ 7.0C / 0CP5: Delay Start Time / 0-10 mins / 0 minsP6/P7: High Temperature Alarm / 0C - 110C / OFFP8: Factory Reset (Not included in all firmware versions. Can also be reset by pressing and holding the + and - buttons for 5 seconds.)
Package Includes:2X (2 Pieces) W1209 12V -50°C- 110°C Digital Thermostat Temperature Control Switch Sensor Modules2X (2 Pieces) NTC 10K Temperature Sensor with ~20 inch (0.5M) cableOnline installation and operating instructions (Available in English and Spanish / Disponible en inglés y español)
Need a longer probe? See our 1 Meter long NTC Thermistor Probe here.
Looking for a W1209 Controller with a plastic case/enclosure? See our W1209 12V -50-110°C Digital Thermostat Temperature Control Switch Sensor + Case.
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