Russound SS-4.2 Intercoms offering traditional access methods with

offering traditional access methods with a built-in card reader (20

bridgeable mono output

Functions as an emergency button to send alerts and trigger alarms on the Aqara Hub in emergencies

Constructed from durable aluminum alloy

Russound SS-4.2 Intercoms offering traditional access methods withRussound SS 4. 2 4 Pair Single Source Impedance Matching Speaker Selector The Russound SS 4. 2 4 Pair Single Source Impedance Matching Speaker Selector allows you to connect and control up to four speaker pairs from a single stereo amplifier. With impedance matching for overload protection and bypass mode for direct speaker switching, it offers both flexibility and long term reliability. Connects and controls up to four pairs of speakers with a single