DIVUS CIRCLE small - full-duplex digital video intercom outdoor station - Ø 140 mm - with day and night Full HD camera (1920x1080 25 fps); white LED wall light; proximity sensor; speaker (max 5W); microphone; call button; relay output; protection: IP53 (no direct sunlight); embedded operating system; SIP client and server; RTSP (h.264) video stream; DTMF-capable via SIPT INFO method; audio: full-duplex acoustic echo cancellation, filters and equalizers, programmable volume levels; design black printed glass