The Federal Signal Models E-DD1 and E-DD2 Single and Dual direct dial substations provide efficient, hands free duplex two-way voice communications with single button call capability.
The E-DD1 / E-DD2 direct dial substations may be preprogrammed to call any other station in the system. E-DD1 Single Call Station can call one location, E-DD2 Dual Call Station can call two locations. By pressing the Call button on the station, a call will be placed to the station at the preprogrammed location. A call may be canceled by depressing the cancel button. Built-in relay contacts may be activated from the calling Master Station for remote door control or anything that a normally open dry contact can initiate.
The E-DD stations are constructed of heavy gauge anodized aluminum with a rugged Mylar face plate. The E-DD1 Single Call Station is equipped with one Call and one Cancel button and a Call Placed LED. The E-DD2 Dual Call Station has two Call buttons, one Cancel button and a Call Placed LED. Both units have built-in, heavy-duty relay contacts. The units are intended for indoor use with flush E-BB2 Back box or E-SMB Surface Box.
The E-DD stations may be programmed for call destination, volume level and other features using any LCD Station in the system or via the Windows based programming software Model ECHO-SFW.
Voltage
24VDC nominal (line driven from ECHO control)
Current Idle
25mA
Current Connected
650mA
Microphone Type
Electret
Microphone Sensitivity
-70dB
Audio Output
1.0 watts
Loudspeaker Size
2.000 in
Loudspeaker Impedence
45 ohms
Volume Control
Max. 110dB(A); Min. 90dB(A)-Tone 2
Line Attenuation
24dB at 160kb/s maximum
Loop Resistance
170 Ohm maximum
Distance
2 km (1.2 miles) maximum
Cable
One twisted pair, non-shielded
Cable Termination
Din rail mount tensioned clamp terminals
Relay Switching Capacity
3A at 240VAC
5A at 24VDC
Height
13.250 in
Width
7.130 in
Depth
3.000 in
Federal Signal
When it comes to safety, security and effective communications for the most hazardous environments, the most demanding applications, Federal Signal stands out as your best source for total industrial solutions. The Federal Signal product line is universally recognized as both the broadest and deepest in the industry. Audible and visual signaling. Outdoor warning. Intercoms. Public address. Telephony. Initiating systems. Fire alarms. Uninterruptible power supplies. And more. In terms of comprehensive product coverage, no one beats Federal Signal. They don’t even come close.