W1209 DC Digital Temperature Controller Board:Input Voltage: DC 12V;Output: 10A One-Channel Relay;Type: Digital Thermostat High Accuracy:W1209 Digital Temperature Controller with 3-Digit LED Display and Using SMD Patch Technology,High Accuracy, Stable Performance Intelligent Control: W1209 Temperature Sensor Embedded CPU Chip (MCU), More Intelligent, Lower Power Consumption Tested Multiple Times:The Module Has Been Tested for Stability, Consistency and Reliability. Wide Temperature Measuring Range -50~110°C, Control Precision: 0.1 Celsius NTC10K Waterproof Probe:XH-W1209 Mini Temperature Controller Equipped with NTC10K Waterproof Probe which Allows to Control the Temperature Even of Fluids,Allowing the Controlled Heated or Cooling color: As shown Material: ABS Package Contents: 3 set x temperature controller(3-Pack) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.