Universal Intercom, 433Mhz Universal Door Phone, Wireless intercom System Secure interphone Headphones, Extendable for Warehouse Office

Specification: Standby Current: 6.5mA Working Current: 400mA Charging Current: 300mA Adapter: Input AC 110V, Output DC 5V Working Frequency: 433MHz Transmission Rate: 256K Power Supply: DC 5V Built-in Lithium Battery: 3.7V 1100mA Size: 217 * 112 * 70mm/8.5 * 4.4 * 2.8inch Application: Widely used in homes, offices, warehouses, workshops Operating Instructions: 1. Simply plug and play 2. The in...