Features 1、Accurate Intelligent Control: This temperature controller come with high speed microcontroller and accurate intelligent control 2、3 Window Simultaneously Display: This is an intelligent digital display thermostat temperature controller, the upper and lower limit settings are displayed simultaneously in three window 3、Automatically Determine Mode: According to the set temperature, the relay can automatically determine the heating mode and cooling mode 4、‑9 To 99℃ Range: Intelligent temperature control switch possess wide temperature range of ‑9 to 99℃, support freely set 5、For Various Temperature Control: Suitable for various space's temperature control, water temperature control, incubator, etc. Specification Item Type: Intelligent Temperature Controller Temperature Range: -9 to 99℃ Temperature Accuracy: 1℃ Control Accuracy: 1℃ Setting Range: -9 to 99℃ Refresh Rate: 0.5s Input Power: DC9 to 15V Environmental Requirements: -10 to 60℃ Humidity Requirements: 20% to 85% Size: Approx. 78 x 50mm / 3.1 x 2in Measurement Input: Waterproof temperature sensor-NTC(3950-10K 1%) Output: Relay output, capacity 220V 10A / 12V 10A How to Use Start Indicator Light: START (red) indicator light is on, indicating that the relay is closed and the device starts to work Stop Indicator Light: STOP (green) indicator light is on, indicating that the relay is disconnected and the device stops working Digital Tube: The middle red digital tube displays the currently detected temperature, The green digital tube on the left is the setting start temperature The green digital tube on the right is the setting stop temperature Button: START sets the starting temperature; STOP sets the stop temperature 1. High Temperature Start: Refrigeration Mode: When the setting start temperature value>stop temperature value, when the detected temperature ≥ the start temperature, the relay closes and the refrigeration equipment works; when the detected temperature ≤ the stop temperature, the relay opens and the refrigeration equipment stops working. For Example: Set the start temperature to 30℃ and the stop temperature to 25℃. When the detected temperature value is ≥30℃, the relay is closed and the start indicator light (red) is on; when the detected temperature value is ≥25℃, the relay is disconnected and the stop indication light (green) is on. 2. Low Temperature Start: Heating Mode: When the setting start temperature value <stop temperature value, when the detected temperature ≤ the start temperature, the relay closes and the heating equipment works; when the detected temperature ≥ the stop temperature, the relay opens and the heating equipment stop working. For Example: Set the start temperature to 25℃, and the stop temperature to 30℃. When the detected temperature value is less than or equal to 25℃, the relay is closed and the start indicator light (red) is on; when the detected temperature value is greater than or equal to 30℃, the relay is disconnected and the stop indicating light (green) is on. Package List 1 x Temperature Controller 1 x Probe