HC-06 RF Wireless Bluetooth Transceiver Slave Module RS232 / TTL to UART converter and adapter. This module is an Upgrade from the older HC-05 and has better stable Firmware. Features: Bluetooth Serial Transceiver Module with backboard. This module includes key interface and state interface compared with Smart Bluetooth Module Baseboard. The Bluetooth Module Baseboard can be compatible with slave mode. Works for Bluetooth TTL transceiver module which allows your target device to both senders receive the TTL data. The key interface on the baseboard is the master mode button and can be controlled by high level from external MCU, and then this module will search again automatically. Built in antenna Bluetooth version: V2.0 EDR

Working voltage: 4.5V to 5.5 V. Transmit tube pressure drop: Vf = 1.6 V Transmit tube current: 20 mA Signal output: A, B two way; The TTL level Distinguish precision: 0.01 mm Measurement frequency, 100 KHZ Encoder diameter: 24 mm Encoder type D hole diameter: 4 mm The encoder resolution: 20 line Speed measuring sensor configuration: The configuration can measures 1 road motor speed

Hand Crank Dc power generator Dynamo Hand held generator 100-300mA -15V/1000mA E-704-A Wattage - 4 Watts Voltage - 15 Volts Output Wattage - 4 Watts. Engine Displacement - 418 Cubic Centimeters Total Power Outlets - 1 Frequency - 50 Hz