This interface provides a single telegraph input to the System 3505 Prism LX. The alarm interface card allows the user to switch select the desired input signal (100 Ma or 24 VDC). Once installed, precludes TCI-6 or 20.

This interface provides up to six telegraph inputs to the System 3505 Prism LX. Optional PCB’s (shown on side) configure the inputs to 100 Ma, 24 VDC, N.O. or N.C. Once installed,  Precludes TCI-1 or TCI-20.

This interface provides up to twenty telegraph inputs to the System 3505 Prism LX. optional PCBs (shown at left) configure the inputs to 100 Ma, 24 VDC, N.O. or N.C. Once installed, precludes TCI-1 or TCI-6. Multiple TCI-20 units may be used.

The Digitize Form Four is a power regulator that provides power, supervision and control for 100MA telegraph boxes.  The Form Four prevents excessive generation of heat which could damage circuitry and reduce the life of the equipment. The Card Cage provides the housing for one common card, and up to 10 Box or Alarm cards in any combination. The Form Four Box Card supplies supervisory and control logic for repeating alarms to bell or recording circuits.  It also automatically provides ground return capability for the reception of alarms from “Three Fold” type fire alarm boxes in the in the event of an open circuit.

The DET-6B  and DET-12B are indoor, mounted, six-zone or twelve zone, solid-state telegraph transmitters that employ a unique code for each zone.  It includes a CAM lock, AC transformer, standby battery and built-in charger. The unit is housed in a steel enclosure suitable for indoor mounting. Telegraph codes unique to each of the six zones for Trouble, Alarm and Secure, and Low Battery are transmitted over a 100-milliampere circuit using positive non-interfering successive (PNIS) line current detection to avoid clashes between more than one transmitting-box. Automatic ground return, a watchdog timer, and a jumper-selected internal trouble buzzer assure continued main system operation and operator notification in the event of box failure. A built-in trouble relay output (Form C) and the ground and code relay (grounding, opening, or no effect on the 100 MA line) are activated by the watchdog timer ensuring reliable failure detection in the event of malfunction.

The DET-6-C is a 6-channel EOL transmitter in cottage shell housing.  It includes a CAM loc, AC transformer, standby battery, and built-in charger.  The unit is housed in a durable cottage shell enclosure suitable for outdoor mounting. Telegraph codes unique to each of the six zones for Trouble, Alarm, Secure, as well as Tamper and Low Battery are transmitted over 100 milliampere circuit using positive non-interfering successive (PNIS) line current detection to avoid clashes between more than one transmitting box.  Automatic ground return, a watchdog timer, and a jumper selected internal trouble buzzer assure continued main system operation and operator notification in the event of box failure. A built-in trouble relay output (form C) and the ground and code relay (grounding, opening, or no effect on the 100MA line) are activated by the watchdog timer ensuring reliable failure detection in the event of malfunction.

The DET-16 is an indoor mounted sixteen-zone solid state telegraph transmitter that employs a unique code for each zone. It includes a CAM lock, display and keypad, AC transformer, standby battery and built-in charger. The unit is housed in a steel enclosure suitable for indoor mounting. Telegraph codes unique to each of the sixteen zones for Alarm, Trouble, and Secure, Low Battery, & AC Power Failure are transmitted over 100 milliampere circuit using positive non-interfering successive (PNIS) line current detection to avoid clashes between more than one transmitting box. Automatic ground return, a watchdog timer, and a software selected internal trouble buzzer assure continued main system operation and operator notification in the event of box failure.  NFPA-72 compliant.