4000 Series 0-button audio module for GSM system, 4G/3G/2G connection, 1 built-in microphone, 1 built-in 8Ω/2W speaker, 1W class D amplifier. Full-duplex audio (AEC) feature with digital noise/disturbance reduction. Integrated RFID proximity reader (125kHz: EM4100/EM4102) for use of up to 1,000 proximity keys Cod. 955/T or ISO3 card, the key configuration takes place through a PC using GSMPRO software. Up to 400 permanent and 32 temporary codes for coded accesses (if used with Cod. 4903 through RS-485). Possibility to locally connect a door opening button. IDC connector for connection via flat cable (supplied) with other optional modules (maximum 8 modules for a total of 40 buttons), or up to 50 buttons via terminal board. 4 LEDs for visual alert of system status: busy, call in progress, open communication and open door. Acoustic alert for the visually impaired: open communication and open door. Configurable door opening time and conversation. 1 standard C-NO-NC clean contact relay (max 24V AC/DC - 2A), 2 open collector outputs, 3 auxiliary inputs. 1 RS-485 bus port, 1 micro-USB port. Adjustable microphone and speaker levels. Blue LED information card backlighting. Microphone to be housed in the specific compartment of the module holder frames that allows for better sound output even in noisy environments, also eliminating any Larsen effect issues. 4 telephone numbers (1 primary, 3 diverts) to be combined with each call/user button. Up to 1,000 users with dial to open feature. 4,000 local and unlimited event logs with remote access. Satin-finished AISI 316 stainless steel plate (marine grade) that provides durability in installations subject to atmospheric agents and in the vicinity of marine environments. Vandal resistant plate with IK07 and IP65 protection rating. Operating temperature -20°/+60°C. Power supply 12Vcc / 12Vac ± 10%/400mA. Simplified device configuration via GSMPRO software locally or remotely, or via SMS. Requires installation of antenna Cod. 434. Dimensions: 103x120x43mm. 1 module.
