Wireless calling system for restaurants, queue management system, waterproof calling devices, easy to clean for cafes and food trucks

Wireless calling system for restaurants - Queue calling system - Water-resistant calling devices - Food calling device - Easy to clean for cafes and food trucks 1. Logo can be customized. The pager can emit a ringtone, vibrate, or flash. 2. The distance between the transmitter and the calling device reaches about 500 meters in open areas. 3. 6-month warranty 4. The voltage is 110 volts - 240 volts 5. Calling device size: 101*50*11 mm 6. Keyboard size: 280*224*32 mm 7. Material: ABS 8. Frequency: 433 MHz 9. Power: Input: AC 110-240V, 50/60Hz; Output: DC 12V/2A 10. Calling device battery: Built-in rechargeable lithium battery with a capacity of 3.7V and 200mAh 11. One transmitter can be equipped with up to 998 calling devices. There are four options in the purchase link. Please choose what you need. QC 100 QC 160 QC 200: QC 300 This page contains product performance data, which is measured in a laboratory environment. Actual values may vary due to usage time and environment.