Two NEDA 926 batteries re-duces maintenance
High DC paging current
Efficient speaker provides loud output and extended area of coverage
High voice power to phone line
Easy phone line connections using push terminals 
Transformer-isolation protects the circuit
Minimum operating current
Easy mounting
Protected page switch
High input impedance
Conformal coating on printed circuit board
Solid state relay prevents chat-ter and allows many units to be installed on the same phone line
All stainless steel construction, Type 304 brushed stainless
Pennsylvania approved
MSHA approved