Feature: 1. Touch Control: This wireless calling system adopts touch panel and touch control, which ensures more accurate operation and long service life. 2. 3 Calling Modes: This restaurant pager system provides 3 calling modes, including vibration, buzzer and flash. 3. Wireless Transmission: This pager system controls 20pcs pagers, and you can easily add up to 998 pagers. 4. Wide Application: This pager system is suitable for fast food restaurants, food courts, pizza parlors, churches and auto shops or other places. 5. Wide Coverage: Within 500 meters, this wireless calling system features efficient connection. Specification: Item Type: Wireless Calling System Material: Plastic, Electronic Transmission Frequency: 433.92MHz Transmitting Power: +23dBM Number of Charging Pagers: 20 Maximum Number of Pagers: 998 Button Mode: Touch Key The Pagers: Receiving Frequency: 433.92MHz Standby Time: 24h Reception Sensitivity: -108dBM Transmission Distance: 500 Meters Prompt Mode: Vibration/Buzzer/Flash Reminder Duration: 1 to 999 Seconds Can Be Set Battery Type: Inbuilt 200mAh Lithium Battery. Package List: 1 x Wireless Calling System1 x Power Plug20 x Pagers1 x Antenna1 x User Manual