2 Way Voice Intercom,Wireless Intercom Doorbell,Super Long Range Wireless Intercomunicador,Waterproof Intercom Doorbell System Unit for Household,Office,Home Intercom System

2 Way Voice Intercom,Wireless Intercom Doorbell,Super Long Range Wireless Intercomunicador,Waterproof Intercom Doorbell System Unit for Household,Office,Home Intercom System Specification: Item Type: 2 Way Voice Intercom Material: ABS Model: H8 Battery: Rechargeable Lithium Battery 3.7V 2000mAh (Built in) Use: Widely used in household, office, laboratory environment, medical treatment, etc. Basic Parameter: Working Temperature: -20? to 55? Transmission Distance: 1000m in open area, 20 to 50m through wall Operating Frequency: 410M to 490M Package List:2 x 2 Way Voice Intercom2 x Base2 x USB Cable1 x User Manual