Welcome to the store! 1、RF Wireless Technology: RF wireless technology with a stable system and long wireless receiving range. The open distance exceeds 200 meters. 2、Waterproof: The buttons use an advanced microprocessor chip, ensuring stable, reliable, and waterproof performance. 3、ABS Material: The wireless call button is made from a durable ABS material shell, scratch-resistant and long-lasting, suitable for increasing work frequency for 433.92MHz transmission screen. 4、Simple to Use: Just set up the machine first, press the button on the transmitter, and the receiver can receive the reminder. 5、Wide Range of Applications: Often used in homes, hotels, bars, restaurants, factories, workshops, clubs, bowling alleys, massage rooms, churches, country clubs, health clubs, and offices. Product Type: Wireless Call Button for Visitor Material: ABS Operating Frequency: 433.92MHz Waterproof Rating: IPX4 Battery: 2 built-in CR2016 batteries (included) Battery Capacity: 80mAh Emission Current: 10mA±3mA Standby Current: <1uA Open Distance: >200 meters Button Presses: 1 million times Operating Temperature: -20℃ to 55℃ Four Keys: Ring, Cash, Order, Cancel 10 x Call Buttons 10 x Film Your 100% satisfaction is our highest priority. We will provide you with the best service. If you find any issues after receiving the product, such as damage or incorrect quantity, please contact us immediately for the best solution!