ET 509

4-wire intercom module, developed in particular for Simplex operation, including loudspeaker and microphone. Prepared for connection of an external call button.
Typical applications: Compact Intercom terminals, built into control desks that are permanently switched to listen to the area which initiated the call. Omnidirectional electret microphone; Power supply via central; loudspeaker with special membrane type for optimal sound quality.
Dimensions: W 85 mm, H 55 mm, D 20 mm
Weight: 145 g