Features: RL68B1 Bluetooth-compatible mesh module board, with external antenna. Provide a variety of light control modes to choose from, single color light, double color light, RGB color light, RGB + white light, RGB + double color light. Multiple PWMfrequencies, 1k, 4k, 8k, 16k, 24k can be customized according to your demands. RL680 chip-SOP16, low power consuption, cloud service expansion, more secure and stable. APP direct connection control, no gate way is required. Wide applications, such as for jane lamp, spotlight, bulb, light strip, panel light, grille lights control and more. Specifications: Main Material: Printed Circuit Board Color: Blue Size: Approx. 21x13 mm/0.83x0.51 inch Frequency Range: 2.4GHz Maximum Receiving Sensitivity: >-91dBm Maximum Transmit Power: Less than 10dBm Voltage Input Range: 2.3V-3.3V Module Working Temperature for Smart Lighting: -40℃~ +85℃ Power Consumption: Sleep mode as low as 6uA Support Mesh Function Various Peripheral Device Interfaces Maximum 5 PWM Outputs Maximum 6 Customizable GPIOs Support Point-to-point and Point-to-multipoint Communication Support Network: Wireless Bluetooth-compatible Antenna Connection Method: External 8-Pin functions: GND:module ground input VCC: 3.3V for DC power input W-: cool white PWM output Y-: warm white PWM output R-: red PWM output G-: green PWM output B-: blue PWM output AC: reserve AC detection pin Package Includes: 1 Piece RL68B1 Bluetooth-compatible Mesh Module note: Please allow 1-2cm errors due to manual measurement,pls make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.