Instrument Enclosure – Thermoplastic Resin

Instrument Enclosure – Powder Coated Cast Aluminum

Intrinsically Safe Headset for EXT-401 Phone

ALD

ALD Automatic Line Disconnect Device – Hands Free

Activate signalling devices like strobes & ringers

Advanced Speaker Phone/Ringdown Circuit Board

Standard Speaker Phone/Ringdown Circuit Board

Automatically disable speakers or trigger signals