1、Noise Cancelling Circuitry: Experience optimal sound quality every time with advanced noise cancelling technology that ensures fast heat dissipation and strong stability. 2、Wide Coverage Area: With a coverage area of up to 800 meters. Guest can sit and relax anywhere, or even take a stroll nearby, while waiting for their order to be ready. 3、Durable: Made from impact resistant ABS plastic, the order device not only looks sleek and stylish but also offers long lasting durability. 4、Waterproof And Oil Resistant Properties: With waterproof and oil resistant properties, this device is perfect for providing reliable service in any demanding environment. The beep and LED flashing notification modes make it easy to tell when an order is ready. 5、1 Transmitter to 16 Receivers Configuration: With a 1 to 16 configuration, your customers can order at their convenience and take a seat while they wait, rather than standing in line at the counter. Item Type: Restaurant Pager Material: ABS Weight: Approx. 1485g / 52.4oz Base Size: Approx. 235x150x30mm / 9.3x5.9x1.2in Order Card Size: Approx. 105x50x12mm / 4.1x2.0x0.5in Color: White Battery: DC3.7v Lithium Ion Battery 150mah (Receiver With Built In Battery For Shipment) Frequency Band: 433MHz Power Supply: DC12V Quantity: 1 Transmitter To 16 Receivers Transmission Distance: >800 Meters Open Areas Notification Method: Beep, LED Flashing Application: Suitable For Restaurants, Bars, Cafes, And Other Queueing Areas. 1 x Keypad Queue Number Call 16 x Pager Buzzers 1 x Plug 1 x Instruction Manual