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Automatic Telephone Ringdown QLRD1 - All Spectrum Electronics
Automatic Telephone Ringdown *NO LONGER AVAILABLE / DISCONTINUED*
Model # QLRD1
 $88.99 
Automatic Telephone Ringdown
Click to enlarge
*NO LONGER AVAILABLE / DISCONTINUED*

Fully Automatic, Just Go Off-hook!

  • Instant off-hook ring down access between two telsets
  • Private full duplex intercom with selectable ring down
  • Instantly generates call on off hook, no dialing!
  • Test ringing, answering and signal-path functions of any telecom device

What is a telephone ring down you may ask! They have been used for years as dedicated communications paths between two standard telephone sets. Over a single pair, with a phone at either end, merely going off hook with one phone, immediately rings the other phone. When picked up, you have a complete intercom path to talk. No dialing necessary!

What are they used for? Well, on the intercom or communications side, they are commonly used for elevator phones, guard post hotlines, door entry phones in homes and offices, and on commercial job sites for rugged intercoms. But it just starts there! Can be used to test ringing, answering, and signal path conditions of devices, two-wire off premise extensions, PABX to Key System tie lines, and more. Measures 5/8 x 4¼ x 2½ inches and is totally encapsulated in UL 94V-0 flame-resistant epoxy resin for long reliable operation. Ringing pattern is selectable to continuous ring; 1 on 1 off; 2 on 2 off; 2 on 4 off. Runs on 12 VAC at 600 mA (Power Transformer is included) or 20–28 VDC at 300 mA. If you work on telephone equipment, or are just looking for an ultra reliable telephone, the QLRD1 can’t be beat! (I used these in my broadcast TV days, now I write this stuff!)

This product was added to our catalog on Saturday 07 October, 2006.
Reviews *NO LONGER AVAILABLE / DISCONTINUED*
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