... Size: 365*158*40mm Receiver Display K-403Specification of call bell K-XWorking voltage: DC9V~12VWorking current: ≤35mAUse ... Payment: T/T, Western union, Paypal, EscrowWarranty: 1 yearFAQApplicationsWireless call system can be used in restaurants, hotels, hospitals, casino, ... system?1. Wireless receiver, installed on the count 2. Call button, installed on each table3. Signal repeater (optional), ...