Item Type: Patient Pager System <br>Material: ABS <br>Display Receiver Parameters: <br>Operating Frequency: 433.92MHz <br>Operating Voltage: DC5V <br>Operating Current: <130mA <br>Standby Current; <550mA <br>Modulation Mode: ASK <br>Receiving Sensitivity: Better Than -105dB <br>Decode: Study Code <br>Waterproof Grade: IPX4 <br>Operating Temperature: Minus 20℃ to 60℃ <br>Button Transmitter Parameters: <br>Operating Frequency: 433.92MHz <br>Alkaline Battery Model: 12V23A (Included) <br>Battery Capacity: 30mAh <br>Transmitting Current: 10mA±3mA <br>Standby Current: <1uA <br>Open Space Distance: >200 Meters / 218.7yd <br>Keys: A Million Times <br>Waterproof Grade: IPX7 <br>Operating Temperature: Minus 20℃ to 55℃ <br>Single Button: Call1、20Pcs Call Buttons: This wireless calling system set provides 20pcs waterproof call buttons, 1 PC display receiver, 20pcs x sticker, and 1 adapter. <br>2、Wireless Technology: This patient pager system adopts radio frequency wireless technology which ensures stable performance and long distance. <br>3、Powerful Receiver: This patient pager system provides 1 PC display receiver which supports 400 call buttons. <br>4、Adjustable Volume: The volume of this customers pager system is adjustable in 30 levels, meeting different needs. <br>5、Wide Application: This wireless calling system is perfect for restaurant, nursing home, cafe, supermarket, hotel, hospital ward, emergency center, bank, school, factory, construction site.1 x Receiver<p>20 x Call Buttons</p><p>20 x Sticker</p><p>1 x User Manual</p><p>1 x Adapter</p>