Video Doorbell- Intercom Indoor Monitor, Tft-lcd For Home Visual, Interphone. Features: These Indoor Monitors Only Can Work with Such Outdoor Unit Which is 5-wire or 4-wire Connection Type This is a 4.3 Inch Indoor Monitor of Video Intercom System. With High Resolution TFT-LCD Screen, the Screen Color and Brightness Can Be Adjusted by Yourself. Use International 5-wire (or 4-wire) Structure Design, the Max Distance of Audio & Video Transmission is About 100 Meters. Support to Monitor, Intercom, Audio & Video, 25 Chord Ringtones, One Key to Unlock. Specifications: Model Number: V43E156 / V43E168 Type: Video Doorbell Indoor Monitor Power Supply Input/Output: AC100 - 240V / DC15V, 1500mA Power: Standby: 1W; Working: 10W Screen: 4.3" TFT-LCD Color Screen Resolution: 480x272 Ringtone: 25 Chords Installation: Wall Mounting Wiring: 4 or 5 PIN Line RVV Video Signal: 1VP - P Intercom Time Delay: 30s Monitoring Time Delay: 90s Relative Humidity: 10% ~ 90% Working Temperature: -20 ~ +60 Celsius 4.3" Wired Video Doorbell Indoor Monitor Screen Package List 1 * Indoor Unit (Monitor) 1 * Power Adapter (US/EU/UK/AU Plug Optional) 2 * Wiring Connector 1 * Mounting Bracket 1 * Screws Bag . We are an international seller, your order will be shipped from abroad so please allow the necessary time of minimum 14 working days for delivery right now depending on where you ship to, due to ongoing delays in postal deliveries globally.