Feature 1Radio Transmitting Circuit: The temperature and humidity sensor has a radio transmitting circuit and coding technology to solve the problem of signal interference blockage. 2Multiple Temperature Modes: Wireless temperature and humidity sensor has multiple temperature modes adjustable for different scenarios. 3Low Power Consumption: Wireless temperature and humidity sensor monitor low power consumption, long battery life, Bluetooth transmission data signal, link Bluetooth, cell phone remote monitoring. 4Low Voltage Monitoring Alert: Temperature and humidity sensor monitor with low voltage monitoring alert function, will send online reports to the host at regular intervals. 5Anti Demolition and Split Design: Our Bluetooth temperature and humidity sensor monitor has professional security field anti demolition design, split design, high reliability.Item Type: Intelligent Wireless Temperature Humidity SensorMaterial: ABSCommunication Mode: BluetoothDetection Temperature Range: -9.9-+60Detection Of Humidity Range: 0-99%RHPower Supply: AAA Batteries x 3 Required (Shipped Without Batteries)Display: 3.5 Inch Large Screen .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List1 x Sensor1 x Manual