As a powerful smart device, the dual relay output temperature and humidity controller can be used to control the environment temperature and humidity under your connected appliance. And, it can independently control house two different humidity or temperature devices, saving a lot of time and effort. Unlike other similar products, the dual relay output temperature and humidity controller can be controlled by many ways alone, such as App control and voice control. You can monitor and control the temperature and humidity of your room anytime you like to offer the most comfortable condition. It is constructed of PC material. Manual and auto modes optional in App enables its better user experience. Besides, set automatic values under auto mode with independent temperature and humidity controlling modes for automatically turning on/off the heating or humidifying device to maintain proper environment for your plants or animals. The length of this product is 5.5cm, width is 2.85cm and height is 9.65cm. Style A is a Wi-Fi temperature and humidity switch with temperature and humidity probe. Style B is a temperature and humidity probe. Style C is a Wi-Fi temperature and humidity switch with temperature probe. And, style D a temperature probe. A wide compatibility for this smart switch module is functional for home-brew, pet breeding, incubation and more. Item Name: Smart Breaker Material: PC Input Voltage: 90-250V AC, 50/60Hz Max. Current: 15A/Gang, Total 15A Temperature Measurement Range: Minus 40 Degree Celsius-80 Degree Celsius/Minus 40 Fahrenheit-176 Degree Fahrenheit Humidity Measurement Range: 0-99Percent Wireless Protocol: Wi-Fi 2.4GHz 802.11 b/g/n Type of Temperature and Humidity Probe: 3.3-5.5VDC Temperature and Humidity Accuracy: Plus or Minus 3 Percent H Plus or Minus 0.5 Degree Celsius Probe Length: Max. 30 Meters Available Size Details: 5cm x 2.85cm x 9.65cm/2.17" x 1.12" x 3.8" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: Style A: 1 x Wi-Fi Temperature Humidity Switch Module 1 x Temperature Humidity Probe 1 x User Manual or Style B: 1 x Temperature Humidity Probe or Style C: 1 x Wi-Fi Temperature Humidity Switch Module 1 x Temperature Probe 1 x User Manual or Style D: 1 x Temperature Probe