2 Wire Speaker/Microphone+Elec. Use With Ht2011 Series 2-Wire Handsets. Requires 1 Or More Sp211 Intelligent Controllers
2 WIRE SPEAKER/MICROPHONE+ELEC. USE WITH HT2011 SERIES 2-WIRE HANDSETS. REQUIRES 1 OR MORE SP211 INTELLIGENT CONTROLLERS.
2 WIRE SPEAKER/MICROPHONE+ELEC. USE WITH HT2011 SERIES 2-WIRE HANDSETS. REQUIRES 1 OR MORE SP211 INTELLIGENT CONTROLLERS.