Call Station Indoor/Outdoor Height (In.) 4-3/4 Width (In.) 4-9/16 Depth (In.) 2-1/2 Door Station Height (In.) 1 Door Station Width (In.) 4-3/4 Door Station Depth (In.) 2-1/2 Master Depth (In.) 2-1/2 Master Height (In.) 4-3/4 Master Width (In.) 4-9/16 Talk Channel Output (W) 50 Watts Peak (25 Per Channel) Listen Channel Output (W) 50 Watts Peak (25 Per Channel) Wiring Conductors 2 Conductors Wire Type Non-Shielded Power Source 24VDC Voltage 24VDC Video Capable No