1、Support 999 Channels - A 999 channels base and 10 pieces of pagers help avoid the waiting of the client in the long queue to a great extent. 2、Built-in Antenna - A built-in antenna creates a high sensitivity to enable base to call pagers clearly and correctly. 3、5km Connection Distance - A built-in antenna enables pager to work normally within 1km from the base. 4、3 Indication Modes - Adopting 3 indication modes of vibration, bee cue, and light to make it suitable for different situations. 5、Wide Compatibility - Suitable for places where there are many guests waiting for service. This wireless queue calling system adopts 999 channels keyboard and 10 pieces of pagers to improve the working efficiency to a great extent and avoid the waiting of the client in the long queue. Built-in antenna spreads the work distance to about 1km. Furthermore, 3 indication modes of vibration, bee cue, and light make it suitable for different situations. Features: Support 999 Channels - A 999 channels base and 10 pieces of pagers help avoid the waiting of the client in the long queue to a great extent. Built-in Antenna - A built-in antenna creates a high sensitivity to enable base to call pagers clearly and correctly. 1.5km Connection Distance - A built-in antenna enables pager to work normally within 1.5km from the base. 3 Indication Modes - Adopting 3 indication modes of vibration, bee cue, and light to make it suitable for different situations. Wide Compatibility - Suitable for places where there are many guests waiting for service. Specification: Product type: Wireless Queue Calling System Channel: 999 channels Indication mode: Vibration, bee cue, light Working voltage: DC 3.7V Working frequency: 315MHZ/ 433.92MHZ Standby current: <12mA±3mAWorking current: ≤260mA Connection distance: Within 1.5km Coder: Code learning Battery capacity: 300mAh Input voltage: 100-240V Plug: US plug Package size: approx. 36 * 21 * 9 cm/ 14.2 * 8.3 * 3.5 in Package weight: 1325g/ 46.7oz Package List: 1 * Transmitter 10 * Receivers 1 * Charging Base 1 * Antenna 2 * US Plug Power Adapters