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Duracell Security 21/23 Alkaline 12V Battery - MN21 - Alkaline - 12 V DC - 1 Each

Item Number: DURMN21BPK

Retail Price: 2.00
Our Price: $1.54 / EA (savings $0.46)

Quantity in Stock: 331

  • Reliable, long-lasting power
  • Duracell special application design
  • Use in important devices like your key fob, car alarm, GPS tracker and other security devices
  • Size: 12 V DC
Free shipping on UPSable supply orders over $50.

Additional Information

12 Volt Security Battery provides trustworthy power for many car alarm remotes, electronic door locks, garage door openers, motion detectors, home security devices and a wide variety of other security needs.

General Information
Manufacturer: Duracell Inc.
Manufacturer Part Number: MN21BPK
Manufacturer Website Address:
Product Name: Security 21/23 Alkaline 12V Battery - MN21
Packaged Quantity: 1 Each

Battery Information
Application/Usage: Multipurpose
Battery Chemistry: Alkaline
Output Voltage: 12 V DC

Physical Characteristics
Weight (Approximate): 0.28 oz

  • Alarms
  • Garage door openers

Environmentally Friendly: Yes

Assembly Required:

Prefix & Stock Number: DUR MN21BPK

What You Need to Know Before Buying an Entertainment System

The holidays are a great time to purchase a new entertainment system. A downside to this is that it is all too easy to be easily seduced into purchasing a flat screen television that does not fit the space available or forgetting you need a multimedia stand to hold it. If this is not bad enough, some stands require quite a bit of assembly and manufacturers do not always make this so clear. Before buying, always make sure you measure first and beware of purchasing any set on a whim. That set may seem great in the store but your house will probably look ridiculous if the first thing you see is a large television in a small space as soon as you walk in the door.

How to Measure Flat Screen Televisions

Another common mistake people often make is measuring televisions incorrectly. If you see a TV at another residence and think that size would not be too much for your space be sure to measure the screen diagonally and not horizontally or you will find the matching size in the store is actually smaller than what you expected because it was measured differently. Figure 1.1 shows how to measure a flat screen TV the right way.

measuring a television screen correctly.

Figure 1.1.  How to measure a television screen


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