Gamewell-FCI ATD-RL2F

Addressable thermal sensor, combination fixed, 135° F and 15°/minute rate-of-rise

  • Factory New
  • Material Obsolete
Brand: Gamewell-FCI Part #: 54471 Category: Manufacturer Part #: ATD-RL2F


The Gamewell-FCI, Velociti® Series addressable plug-in thermal sensors with integral communication provide features that surpass conventional sensors. Point ID capability allows each sensor’s address to be set, providing exact locations for pinpointing alarm locations and used for selective maintenance. ATD thermal sensors use an innovative thermistor sensing circuit to produce 135°F/57°C fixed-temperature (ATD-L2F). The ATD-RL2F provides a combination 15°/minute rate-of-rise with 135° fixed thermal detection that is included in a low-profile package. The ATD-HL2F provides fixed high-temperature detection at 190°F/88°C. These thermal sensors provide cost-effective, addressable property protection in a variety of applications. The Velociti® Series uses a communication protocol that substantially increases the speed of communication between the sensors and Gamewell-FCI analog addressable fire alarm controls. These devices operate in a grouped fashion. If one of the devices in the group has a status change, the panel’s microprocessor stops the group poll and identifies the single device with the status change. The net effect is response speed up to five times greater than earlier designs.


Weight 0.2 lbs
Dimensions 2.10 × 4.10 × 4.10 in

Rotary Dials

Thermal Rating



Detection Method

Fixed Temperature, Rate-of-Rise

Production Status




Product Notes

Replacement: ATD-L3R-IV


  • Sleek, low-profile design
  • Visual rotary switch addressing
  • Built-in functional test switch activated by an external magnet
  • Bi-color LEDs flash green whenever the sensor is addressed, and light steadily red on alarm*
  • Optional relay, isolator, or sounder bases
  • Low standby current
  • Addressable communication
  • Stable communication technique with noise immunity
  • Optional remote, single-gang LED accessory (RA-100Z)
  • Suitable for installation in ducts

Note: *Only the red LED is operative in panels that do not operate in Velociti® mode.

Veloticit Series; ATD-L2F, ATD-RL2F

Gamewell-FCI - Data Sheet

Related Products...