The E-10A and E-20B are telephone line powered speaker phones designed to provide two-way handsfree communication. Both function identically, but are available in two different housings to better suit the application. When the "Call" button is pressed, the E-10A or E-20B will come off-hook and will remain off-hook until a CPC signal is detected, the programmed timeout has elapsed, a busy signal is detected, or the call goes silent, making the unit automatically disconnect.

• Chassis: Impact resistant, UV stable, light grey Geloy plastic with black UV stable pad printed graphics, surface mount only
• Alternate action call button to place or cancel a call
• Intelligent call progress detection for automatic hangup on CPC, silence, busy signal, or time out
• Telephone line powered
• Adjustable microphone and speaker volume
• Programmable maximum call length
• Selectable auto-answer feature allows remote monitoring
• Two-way handsfree communication
• Programmable VOX (mic / speaker) switching speed