... connect to wireless detectors Similar products:B/W Intercom System, B/W Video Intercom System, B/W Multi-user Intercom, B/W Video Door Intercom, Door Intercom, Intercom ... : working, max 9W, holding, 130mW.3.Environmental temperature:-30°C-55°C.4.Power output:≥5mW. 5.Degree of distortion:≤5%.6 ...