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PG21 & PG21E

INSTALLATION  INSTRUCTIONS

345 Bayview Avenue

Amityville, New York 11701

For Sales and Repairs, (800) 645-9445

For Technical Service, (800) 645-9440

© ALARM LOCK 1994

 WI738B  08/94

ALARM LOCK

DESCRIPTION

The PG21 and PG21E are surface-mounted microproc-

essor-controlled door alarms. The PG21 is a basic battery-
operated unit. The P021 E has provisions for an external
power supply; external reed-switch contacts for multiple-
door monitoring; and a built-in Form-C relay for connection
to a fire or burglary alarm panel or other device.

The units mount on the interior of the doorwith a magnetic

actuator on the frame; or, if external wiring is required
(PG21 E only), vice versa. Full clockwise rotation of the
installed standard mortise cylinder (not supplied) will alter-
nately arm and disarm the unit. A selectable Annunciator
feature beeps to signal opening of the door while the unit is
disarmed. Opening the door, removal of the coveror any
attempt to defeat the device with a second magnet, when
armed, will activate the alarm. The units may be operated
from outside the door with the addition of a standard rim
cylinder. A test button and LED are used to check status; if
the unit is armed, pressing the button will light the LED.

SPECIFICATIONS

Dimensions: 

9” 

21/2” 

x 2W8” (22.8cm x 6.3cm x

6.8cm)(LxWxD)

Finish: 

Metallic Silver (PG21 MS, PG21 E); Metallic

Bronze (P021MB); Red (PG21RD)

Power Requirements: 

9-Volt Alkaline Battery (supplied).

(The PG21E may be used with Model PP100 (optional) or
other power supply providing 9 - 12Vdc at 500mA.)

Battery 

Life: 

Continuous Alarm, 3 hours; 2-Minute Shut

down, see Table 1 below.

Sounding Device: 

Piezo electronic sounder, sweep

siren, 110dB at 10 feet

Shipping Weight: 

1 lb, 10 oz.

INSTALLATION

Note: In many applications,

the. need for a template may be
eliminated by using the Magnet
Alignment procedure in step 11.
If outside key control or remote
wiring is required, however, the
template must be used.

1. Referring to the illustration

at right,

(a) install mortise cylinder

(Alarm Lock Model CEM,
optional) into the cover from the
outside with the key slot at the
6 o’clock position;

(b) install the Spacer

(P4607), then screw the Lock
Ring (P1267) onto the Cylinder as shown and tighten using
the SpannerWrench (P4577) supplied. Fig. 1. Installing
mortise cylinder.

2. If using a template, select the proper template for the

specific type of door. (If not using a template, proceed to
step 6.)

3. Mark and drill 9/16" holes per template directions on

the door and jamb. (Four holes for baseplate and two holes
for magnetic actuator.) Note: Certain narrow-stile doors
require only two holes for mounting plate.

4. Model PG21E only: Mark and drill Whole per template

for remote wiring to a control panel.

5. For outside key control only: Drill 1/4” hole as shown

on template. Install a rim-type cylinder (not supplied)
through the door and allow the flat tailpiece to extend 5/16”
beyond the door. Position cylinder, keeping key slot point-
ing down (6 o’clock position) and tighten cylinder screws.

6. Knock out the necessary holes from the baseplate and

install on the door with #8 sheet-metal screws supplied. If
an outside cylinder is used, make sure that rim cylinder
tailpiece fits into cross slot of ferrule.

7. Connect the battery; a chirp will sound. (This ensures

that power is properly connected.) Important: Press the
small CLEAR button at the lower-left corner of the circuit
board (see Fig. 2).

8. Remove the jumper only on the side of the unit that the

magnet will not be installed.

Alarms / Year

Battery Life (Months)

1

17.6

2

17.4

3

17.1

4

16.8

5

16.6

6

16.3

7

16.1

8

15.8

9

15.6

10

15.4

Table 1. Battery Life with 2-Minute Shutdown option.

Fig. 1. Installing mortise cylinder.

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