- DL manuals
- Radio Shack
- Security System
- 49-421A
- Owner's Manual
Radio Shack 49-421A Owner's Manual
Summary of 49-421A
Page 1
Cat. No. 49-421a owner’s manual please read before using this equipment. Door alarm 49-421a.Fm page 1 thursday, august 19, 1999 7:48 am.
Page 2: Features
2 features the radioshack door alarm is your 24- hour “electronic sentry.” you can choose between an instant alarm (for when you are home) or a delayed alarm (giving you time to disarm the alarm after you return home). Disarming is easy using one of the two keys that come with your alarm. Your alarm...
Page 3
3 low power consumption — uses less than 0.05 ma in standby mode (when the alarm is not sounding) for long battery life. Solid-state circuitry — provides depend- able operation. 49-421a.Fm page 3 thursday, august 19, 1999 7:48 am.
Page 4: Preparation
4 preparation installing a battery your alarm requires one 9-volt battery (not supplied) for power. For the best perfor- mance and longest life, we recommend an alkaline battery, such as radioshack cat. No. 23-553. Cautions: use only a fresh battery of the required size and type. Follow these steps ...
Page 5
5 1. Use a phillips screwdriver to remove the screw from the battery compart- ment cover, then slide the cover off. 2. Snap the connector over the 9-volt battery’s terminals and place the bat- tery in the compartment. 3. Replace the cover, then reinsert and tighten the screw. When your alarm operate...
Page 6
6 mounting the alarm your alarm is designed for mounting on non-metallic doors and windows only. It uses a magnet to trigger the internal alarm. Mounting on metal surfaces can interfere with proper operation of the magnetic sen- sor. Selecting a location for proper alignment, you must mount the alar...
Page 7
7 screw mounting 1. Using the supplied drilling template, mark the screw center points for both the alarm and magnet. You can drill starter holes to make it easier to insert the screws. 2. Thread screws (supplied) into holes a and b until the screws’ heads extend about 1 / 8 inch (3 mm) from the mou...
Page 8
8 3. Line up the keyhole slots on the back of the alarm with the screws, then slide the alarm down onto the screws to secure it. 4. Remove the bat- tery compartment cover and the bat- tery. Then thread a screw into hole c inside the com- partment. Rein- stall the battery and replace the cover. 5. Us...
Page 9
9 adhesive tape mounting 1. Clean and dry the mounting surfaces for both the alarm and the magnet. 2. Peel the backing off of one side of each of the supplied adhesive strips, then attach them to the back of the alarm and the magnet. 3. Peel the backing off of the other side of the alarm’s adhesive ...
Page 10: Operation
10 operation using your door alarm a pair of keys is provided to operate the off/on key switch. When the alarm illustration that was on the front cover of the o/m with callouts to key switch and mode switch. 49-421a.Fm page 10 thursday, august 19, 1999 7:48 am.
Page 11
11 sounds, silence it by inserting a key and setting the key switch to off. Instant alarm to arm the alarm while you are at home, set the mode switch to instant alarm and set the key switch to on. The alarm sounds if the secured door or window is opened and the magnet moves away from the alarm unit....
Page 12
12 delayed alarm to arm the alarm when you leave the house, set the mode switch to delayed alarm and set the key switch to on. Once the switch is set to on, there is about a 15-second delay before the alarm is armed, giving you time to go out and close the door. When you return home and open the se-...
Page 13: Care
13 care to enjoy your radioshack door alarm for a long time: • keep the alarm dry. If it gets wet, wipe it dry immediately. • use and store the alarm only in nor- mal temperature environments. • handle the alarm gently and carefully. Don’t drop it. • keep the alarm away from dust and dirt. • wipe th...
Page 14: Specifications
14 specifications power source ............ 9v alkaline battery operation voltage ................ 7v minimum current drain at 9v: standby mode ....... 0.03 ma nominal (0.05 ma maximum) alarm sounding ........ 20 ma nominal (30 ma maximum) alarm frequency .............. 2.9 khz ± 25% alarm cycle fre...
Page 15
15 limited ninety-day warranty this product is warranted by radioshack against manufacturing defects in material and workmanship under normal use for ninety (90) days from the date of purchase from radioshack company- owned stores and authorized radioshack franchisees and deal- ers. Except as provid...
Page 16
Radioshack a division of tandy corporation fort worth, texas 76102 dg3-110-18 8a8n printed in hong kong (continued) products on which a refund is made, become the property of radioshack. New or reconditioned parts and prod- ucts may be used in the performance of warranty service. Re- paired or repla...