Bluetooth Base Station Module 4.0 BLE Positioning Supports WeChat Temperature and Humidity Item Type: Bluetooth Base Station Module Working Frequency: 2.4GHz ISM band Modulation Method: GFSK (Gaussian frequency shift key) RF Power: -23dbm, -6dbm, 0dbm, 6dbm, through AT knob + power supply to modify! Speed: Asynchronous: 6K bytes Synchronization: 6K bytes Security: Authentication and encryption Service: UUID FFE0 central and peripheral equipment, FFE1 Power Supply: +3.3vdc 50ma Long Distance: Use for iPhone 4s, open space is 100 meters. Power: 400uA~1.5ma in sleep mode, 8.5ma in active mode. Working Temperature: -5~+65 degrees Celsius Battery Type: CR2032 (Note: does not include battery delivery) Customize：For iBeacon settings, including UUID, etc. Application: Firmware update Support payment interface support Support transmission to read battery power, temperature, humidity acquisition without connecting the module For iOS is light blue: you can download it in for iOS store