The OEI-372S-H-W-Z is a compact and efficient indoor station designed for advanced surveillance and access control applications. It features a 7-inch ultra-thin TFT LCD display with a resolution of 1024×600, providing clear and reliable visual output. Running on a stable Linux operating system, the device supports dual power options, including DC 12V (±25%) and IEEE802.3af PoE, with a low power consumption of less than 10W. The unit delivers high-quality audio performance through its built-in omnidirectional microphone and speaker, supported by noise suppression, echo cancellation, and automatic gain control. It uses MP3 and G711 audio compression at 128 Kbps for efficient and clear communication. In terms of connectivity, the device is equipped with multiple interfaces, including power, network, Wi-Fi (2.4GHz), RS485, IO inputs and outputs, and a TF card slot, making it highly adaptable for integrated security systems. It supports key network protocols such as TCP/IP, IPv4, HTTP, RTP, RTSP, and NTP, along with UNV’s private protocol. The system is capable of storing up to 200 screenshots and handling 200 zone alarms, while supporting up to 20 connected devices, including IPCs, entrance stations, NVRs (up to 2), and doorbells. It also allows up to 19 indoor station extensions. Designed for indoor environments, it operates within a temperature range of -10°C to +55°C and humidity levels of 10% to 90% (non-condensing). With a lightweight design of 360g and compact dimensions of 193 × 143 × 25 mm, the device is easy to install and suitable for both residential and commercial use. It is also NDAA compliant, ensuring it meets international security and regulatory standards.