Johnson Controls A72AE-1C S/F 11/09 All Genesis ceiling speakers include

All Genesis ceiling speakers include a DC blocking capacitor to allow electrical supervision of the audio distribution circuit

and confirm electrical connections meet National Electrical Code (NEC) standards

the switch release an alarm sent to the Signature loop controller

Fail-safe mechanisms built into the card directly connect the data input and output ports should the network card

Johnson Controls A72AE-1C S/F 11/09 All Genesis ceiling speakers includeJohnson Controls A72AE 1C : Two Pole Temperature Control, 25 to 90 Deg, DPST Contacts Open on Temperature Drop, 6' Capillary, Weather Resistant Enclosure, 11 16 x 6 3 4" Bulb Datasheet (Technical Specifications): Download A72AE 1C Datasheet (PDF)