| (Model # PIOU2) Note: Picture may not represent the actual product. We are continuously working on improving our website and reserve the right to change specifications, availability, and pricing without prior notice. 1 per DK40 system to interface to SMDR, local terminal or external modem. Contains relay control, alarm sensor, door lock control, BGM mute control, tape recorder control or night ring relay, and 4-zone page interface. Accepts IMDU internal modem. 1 to 3 per DK280/DK424/DK424i system to interface to SMDR, local terminal, external modem, SMDI, or MIS processor. Also contains relay control, 3-watt amplifier, alarm sensor, door lock control, BGM mute control, tape recorder control or night ring relay, and 4-zone page interface. Maximum 1 - 3-watt amplifier per system. | |