Alpine^® Redi-Release^®

All models are UL, C-UL and CSFM listed and are compliant with the NFPA 80 requirement for a fail-safe door holder / releasing device. The various models include common features such as a vibration-resistant latching mechanism for the fusible link connection, mounting flexibility and disruption-free testing capabilities.

LM90 Model B

• Two adjustable time delays for power loss and alarm signals form a detector or remote switch to reduce costly door resetting caused by nuisance or false alarms.
• Testing function allows routine fire door testing without requiring activation of the smoke detector or central alarm system.
• Downlimit detection prevents door release if the door is already in the closed position. Eliminates door reset service calls or potential system damage.
• Motor voltage sensing monitors voltage to the operator and activates a mechanical door release upon loss of power to the operator.
• Form C dry contact relay output for activation of notification devices including horns and strobes.

LM90 Model B2

Featuring a built-in battery pack, Model B2 provides the added functionality of a separate fire alarm panel. It is designed for installations where power outages are a regular occurrence or where an existing alarm system is not available or is unable to support the door release system.

Includes all the Model B safety features, plus:

• 72-hour internal battery backup (with charger) provides power to the release device as well as up to 4 smoke detectors to prevent door release during long power outages.
• Two SPDT dry contact relay outputs for both delayed and non-delayed activation of devices such as horns and strobes.
• Two smoke detector loops (one normally closed and the other normally open)
• 12 VDC alarm output for an optional voice annunciation module
• On-board diagnostics allow monitoring of battery charging circuit and alarm inputs

LM90 Model B2 Master

Possessing the same features as the Model B2, the B2 Master can function as a "master" unit, operating up to three Model RR remote release "slave" devices. This combination of devices is designed as a cost-efficient means to address multiple door installations in close proximity, where closures can occur from a common alarm signal. The B2 Master and RR remote release devices are connected via a common "daisy-chain" wiring method, which reduces installation time and cost. The 72-hour battery backup feature of the B2 Master, the Model RR devices are fail-safe devices, as they are part of the fusible link assembly.

LM90 Model C

The "smart" system, Model C has many intelligent features that work in conjunction with a required safety edge system to ensure the door closes and stays fully closed after a pre-determined time period.

Includes all Model B2 safety features, plus:

• Obstruction cycling works with the door´s safety edge system to reverse the door if obstructed on the way down. It will attempt closure up to 10 times (factory default is 3 cycles) before activating the door´s mechanical release mechanism.
• Remote Test Station (optional) - disables the cycle counter to allow testing of a door without a mechanical release after the selected number of cycles.
• Emergency exit feature allows door control features to function as usual if an obstruction is not encountered upon closure, allowing the door to operate as an emergency egress exit with pressure on the "open" button of the control station.
• Safety timer automatically deactivates the motor and initiates a mechanical release if door does not close within a pre-determined time period.

LM90 Model C+

Similar to Model C, this device works in conjunction with a required safety edge system to sense an obstruction during door closure. However, Model C+ allows the option of not initiating a gravity drop upon completion of the obstruction cycling. Instead the door is powered down by the operator and comes to rest upon the obstruction until the alarm is cleared.

Includes all Model C safety features, plus:

• Stop-on obstruction cycling will attempt door closure up to 10 times (factory default is 3 cycles) before allowing the door to rest upon an obstruction. Once the alarm is cleared, the door will reopen and reset automatically.