10pcs Wireless Pager Call Button RF Wireless Waterproof Restaurant Call Buttons with ABS Shell for 433.92MHz Host black

10pcs Wireless Pager Call Button RF Wireless Waterproof Restaurant Call Buttons with ABS Shell for 433.92MHz Host black.Feature: 1. RF Wireless Technology: RF wireless technology, stable system, long wireless receiving distance. The open distance is more than 200 meters. 2. Waterproof: Call buttons use advanced micro processing chip, which makes its performance stable, reliable and waterproof. 3. ABS Material: Wireless pager button is made of sturdy ABS material shell, wear resistant and durable