IML Security Supply
Welcome to IML Welcome to IML
Welcome to IML Welcome to IML
Welcome to IML Welcome to IML
Welcome to IML Welcome to IML
Pilfergard Exit Alarm With Strobe Light, Surface Mount, Requires Mortise Cylinder-Standard Cam, 9V Battery Included, Metallic Silver

Hot#: 171992
 Finish: Metallic Silver

Available: 18 ( 3 KAN, 15 SLC )

The PG21 is designed to continually monitor the status of a door. When opened, the protected door triggers an alarm sounder (95db) and Strobe Light

  • Overview
  • Specifications

ALARM LOCK PG21 Advanced Door Alarm Series

PG21 Advanced Door Alarm Series from Alarm Lock are a quick and inexpensive solution when faced with security vulnerabilities from doors being propped open in schools, restaurants, stores nursing homes and theaters. Whether door-propping occurs for quick returns from taking “smoke” breaks, to permit insider-jobs or to allow unregistered visitors or contraband to circumvent main security entry points, it remains a problem for facility managers and security officers everywhere.

These surface-mount, narrow stile microprocessor controlled door alarms quickly improve security at any single or double door with a 95dB alarm, entry delay, key-removal and auto-shutdown/reset options. The PG21 has two arming modes, standard mode or "always armed" mode and it enables multiple door monitoring with built-in external reed switch, has three entry delay options as well as selectable minute-shutdown. Available in Metallic Bronze or Silver models with optional bright strobe on top that lights brightly on alarm and can be easily seen across any room for pinpointing the door at issue. Typical applications include emergency fire escape doors, nursing home stairwell doors, rear restaurant and theater doors.


  • Two selectable arming modes:
    • Always Armed Mode: when key is turned counter clockwise to the disarm position, the key cannot be removed. To remove key, turn back to arm mode, thus keeping unit armed always.
    • Standard Arming Mode: when key is inserted turning counter clockwise will disarm and key can be removed. Turning key clockwise will arm and key can be removed.
  • Status Indicator: The LED will indicate RED when armed.
  • Long-life 9V battery: (supplied), low battery alert.
  • Entry Delay Time Options: include 15 seconds, 1 minute 15 seconds & 3 minutes 15 seconds.
  • For use on standard size and narrow stile doors: sleek model design key-activated door alarm.
  • Sweeping Siren: over 95dB.
  • Continuous Power: with the addition of an external power.
  • Multiple Door Monitoring: permitted with built-in external.
  • Optional Strobe unit PG21MSS/PG21MBS: units include a highly visible amber strobe that flashes when unit goes into alarm.
  • Unauthorized use of door causes alarm to sound and activates LED indicator.
  • Options include continuous alarm, minute shutdown with auto reset and exit/entry delay.
  • Uses standard mortise cylinder.
  • Self contained and dual-tamper supervised.


  • DIMENSIONS: 11" x 2-1/2" x 2-3/8" (22.8cm x 6.3cm x 6.8cm) (LxWxD) (Length 11" with strobe, 9" without strobe).
  • FINISH: Metallic silver or metallic bronze.
  • POWER REQUIREMENTS: 9-volt alkaline batter (supplied), may also be used with PP100 (optional) or other power supply providing 9-12Vdc at 300mA. Internal battery may be used simultaneously with external power supply.
  • SOUNDING DEVICE: Piezo electronic sounder sweep siren, steady or pulsing, 110dB at 10 feet.
  • RELAY CONTACT: (Form-C) rated at 24VAC/DC at 1A (non-inductive).
  • SHIPPING WEIGHT: 1 lb, 10 oz.


  • Four siren sounds.
  • Four Alarm Modes: for a variety of applications.
  • Optional time delays.
  • Long-life Battery Operated: approximately 2-1/2 years.
  • External power supply capability.
  • Built-in Door Bell: requires button installation.
  • Cover Tamper Protection: unauthorized removal triggers alarm.
  • Key Lock Tamper: cover can not be removed without key.
  • Multiple Door Monitoring: external reed/magnet switch contacts.
  • Form-C Relay: connect to fire/burglary panel or other device.
  • Annunciator Feature: beeps when door opens.
  • Two Operating Modes: Always armed or On/Off.
  • Strobe Feature: PG21MSS models only.
  • Status Indicator.


  • CEM: Mortise cylinder for interior arming/disarming.
  • CEM: Rim cylinder for exterior arming/disarming.
  • BATTERY LIFE: 2-1/2" years standby typical; 200 alarm sequences.
  • PP100: Optional, continuous power supply (6-12V).


» PG21MSS - Metallic Silver finish with strobe
» PG21MBS - Metallic bronze finish with strobe
» PG21MS - Metallic Silver finish
» PG21MB - Metallic bronze finish

Specifications for Alarm Lock Systems Inc ALAPG21MSS

Other Specs
Access TypeAlarm, Strobe
CategoryExit Alarms, Panic Devices & Exit Alarms
Cylinder IncludedNo
Cylinder TypeMortise Cylinder
Finish ColorMetallic Silver
ManufacturerNAPCO Security
Power Supply TypeBattery
SupplierAlarm Lock