20pcs W3231 Incubator Temperature Controller Thermometer Cool/Heat Digital Dual Display with NTC Sensor AC 110-220V

Description Temperature Control 55°C 120°C 67°F 248°FTemperature Control Accuracy 0 1 °C 0 1 °FDisplay Color Red BlueWorking Power Supply AC110V 220VTemperature Sensor 1M NTC 10K Product Size 79 2mm 41 9mm 26 3mmHole Size 72 1mm 39 2mm Operation and Display Panel Warning code CodeReason for errorSolutionHHHTemperature exceeds alarm temperatureThe temperature drops below the alarm temperature and returns to normal LLLNo temperature sensor detectedReplacement reconnect temperature sensor Indicator light ColorIndicating situationRedThe red light flashes and the heating mode is delayed The red light is always on heating mode is running BlueBlue light flashes cooling mode delay starts The blue light is always on cooling mode is running Instructions  1 Short press SET small dital tube to flash press △ or ▽ to set the target temperature press Standby button or no operation to save the setting within 3 seconds 2 Press and hold SET to enter the code setting mode press △ or ▽ to switch the code After selecting press SET to enter the code setting After setting press Standby button or no operation to save the setting within 3 seconds 3 The last parameter setting is saved by default after shutdown 4 restore the factory settings press and hold SET to power on 5 When the module is powered on it will start directly After power on press and hold the standby button the module will enter sleep or wake up if power failure the mod