As the official Polish distributor of HIKVISION equipment in Poland, we guarantee that: We sell only genuine HIKVISION products. All items in our auctions are available IMMEDIATELY. We offer full warranty and post-warranty support for all purchased items. The DS-KD-PMR module is designed to work with the DS-KD8003-IME1 or DS-KD8003-IME2 video intercom module. The module is integrated with an induction loop, enabling audio transmission to hearing aids for the hearing impaired. The module is also equipped with status indicators, displaying dialing, unlocking, and two-way voice communication status. DS-KD-xx series modules are mounted in dedicated DS-KD-ACF series housings (flush-mounted housings) and DS-KD-ACW series housings (surface-mounted housings). The masking frames included with both series are made of aluminum. SPECIFICATION: Compatibility: DS-KD8003-IME1, DS-KD8003-IME2 ; Audio support: Impedance: 4, Frequency range: 100Hz.. 3800Hz, SNR: 47dB 10cm ; Interfaces: 2 pcs. RS-485 - for module connections, 2 pcs. Power - for module connections ; LED indicators: Selection, Door opening, Two-way audio transmission, PMR ; Standalone operation: None ; Tamper output: None ; Power: Supplied by DS-KD8003-IME1 or DS-KD8003-IME2 ; Power consumption: max. 8W ; Housing: Plastic ; Colour: Black ; Ingress protection: IP65 ; Operating temperature: -40C.. 55C ; Permissible relative ambient humidity: 10.. 90% (non-condensing) ; Weight: 0.17kg ; Dimensions: 100 x 98 x 34mm ; Manufacturer / Brand: Hikvision ; SAP Code: 305303846 ; Full product name: MODULE WITH INDUCTIVE LOOP DS-KD-PMR Hikvision .