4-Button Door Station (Doorphone for Multi-Floor Video Intercom System) ? Handsfree Video Intercom ? Support Multi Floor System (upto 4 floors) ? High-Definition Door Camera with 2MP Resolution ? Works with 2-layer security ? Nametag Support for Each Button ? Supports both Analog and Hybrid Monitors* (toggle switch for Analog and Hybrid Modes) ? Weatherproof with IP65 Rating ? Vandal Proof with IK10 Rating ? Color Night Vision with White LED ? Built-in Omnidirectional Microphone ? Noise Suppression, Echo Cancellation ? Exit Button support.? RFID Card Unlock Support ? Tamper Alerts from door station (outdoor unit).