2 Wire Wall Handset-Alph-White. Use With Nh209tta Series Power Supply/Amplifier Only. Has Built-In Alphatone Signal
2 WIRE WALL HANDSET-ALPH-WHITE. USE WITH NH209TTA SERIES POWER SUPPLY/AMPLIFIER ONLY. HAS BUILT-IN ALPHATONE SIGNAL.
2 WIRE WALL HANDSET-ALPH-WHITE. USE WITH NH209TTA SERIES POWER SUPPLY/AMPLIFIER ONLY. HAS BUILT-IN ALPHATONE SIGNAL.