Mercury 2-Way Intercom Energy Saving Telephone Style Wall Mounted

2-Way IntercomA two station, energy saving, telephone style intercom with a simple two wire connection, allowing 2-way conversation. It features a call button with adjustable call tone level. Both units are powered by 4x AA batteries (not supplied).DetailsPower supply 6Vdc (4 x AA per unit)Sensitivity

Price: 30.92 from Boxed2me