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"car alarm systems"

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CompuStar Alarm Upgrade Kit for Most CompuStar Remote Start Systems and Geek Squad ® Installation - largeImage
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  • SKU: 9999255900050000
Package includes an alarm add-on kit and installation performed at your local Best Buy store by MECP-certified Geek Squad Autotechs, whose workmanship is warrantied for life.

CompuStar Alarm Add-on Kit
  • Works with most CompuStar remote start systems
  • 3-in-1 digital adjustable sensor
  • 6-tone siren
$99.99
Save $14.99 (Reg. $114.98)
Directed Electronics - Viper Backup Battery System - Black - Larger Front
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  • Model: 520T
  • SKU: 1721186
From our expanded online assortment; compatible with Viper alarm systems; maintains power delivery to security system even if battery is disconnected
Price Match Guarantee

Best Buy is dedicated to always offering the best value to our customers. We will match the price, at the time of purchase, on a Price Match Guarantee product if you find the same item at a lower price at a Designated Major Online Retailer or at a local retail competitor's store.

Here's how:
  • If you find a qualifying lower price online, call 1-888-BEST BUY and direct a customer service agent to the web site with the lower price, or when visiting a Best Buy store, one of our employees will assist you.
  • On qualifying products, Best Buy will then verify the current price to complete the price match.

Exclusions apply including, but not limited to, items sold by Marketplace vendors, Competitors' service prices, special daily or hourly sales, and items for sale Thanksgiving Day through the Monday after Thanksgiving. See the list of Designated Major Online Retailers and full details.

$30.99
On Sale
Save $39 (Reg. $69.99)
CompuStar - 2-Way LCD Confirmation Remote Kit for Most CompuStar RSG6 Series Remote Start Systems - Black/Orange - Larger Front
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  • Model: RF-2W803-SS
  • SKU: 1654939
Compatible with most CompuStar RSG6 series remote start systems; 2-way LCD and 1-way remotes; up to 1-mile range
Price Match Guarantee

Best Buy is dedicated to always offering the best value to our customers. We will match the price, at the time of purchase, on a Price Match Guarantee product if you find the same item at a lower price at a Designated Major Online Retailer or at a local retail competitor's store.

Here's how:
  • If you find a qualifying lower price online, call 1-888-BEST BUY and direct a customer service agent to the web site with the lower price, or when visiting a Best Buy store, one of our employees will assist you.
  • On qualifying products, Best Buy will then verify the current price to complete the price match.

Exclusions apply including, but not limited to, items sold by Marketplace vendors, Competitors' service prices, special daily or hourly sales, and items for sale Thanksgiving Day through the Monday after Thanksgiving. See the list of Designated Major Online Retailers and full details.

$179.99
CompuStar - 3-in-1 Sensor Accessory for Select CompuStar Remote Start/Security Controllers - Black - Larger Front
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  • Model: FT-DAS
  • SKU: 6559453
From our expanded online assortment; compatible with CompuStar 6X00-type remote start/security system controllers; 3-in-1 integrated shock, tilt and g-force sensors
Price Match Guarantee

Best Buy is dedicated to always offering the best value to our customers. We will match the price, at the time of purchase, on a Price Match Guarantee product if you find the same item at a lower price at a Designated Major Online Retailer or at a local retail competitor's store.

Here's how:
  • If you find a qualifying lower price online, call 1-888-BEST BUY and direct a customer service agent to the web site with the lower price, or when visiting a Best Buy store, one of our employees will assist you.
  • On qualifying products, Best Buy will then verify the current price to complete the price match.

Exclusions apply including, but not limited to, items sold by Marketplace vendors, Competitors' service prices, special daily or hourly sales, and items for sale Thanksgiving Day through the Monday after Thanksgiving. See the list of Designated Major Online Retailers and full details.

$44.99
Directed Electronics - Ignition Bypass Module - Larger Front
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  • Model: 556U
  • SKU: 6673682
Compatible with most alarms; bypasses factory antitheft systems during remote starting; 2-wire connection
Price Match Guarantee

Best Buy is dedicated to always offering the best value to our customers. We will match the price, at the time of purchase, on a Price Match Guarantee product if you find the same item at a lower price at a Designated Major Online Retailer or at a local retail competitor's store.

Here's how:
  • If you find a qualifying lower price online, call 1-888-BEST BUY and direct a customer service agent to the web site with the lower price, or when visiting a Best Buy store, one of our employees will assist you.
  • On qualifying products, Best Buy will then verify the current price to complete the price match.

Exclusions apply including, but not limited to, items sold by Marketplace vendors, Competitors' service prices, special daily or hourly sales, and items for sale Thanksgiving Day through the Monday after Thanksgiving. See the list of Designated Major Online Retailers and full details.

$52.99
Directed Electronics - Pin Switches (5-Pack) - Angle
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  • Model: 8607
  • SKU: 3025701
From our expanded online assortment; compatible with most aftermarket alarms; keeps remote starts from activating with the hood is up; adjustable design; 5-pack
Price Match Guarantee

Best Buy is dedicated to always offering the best value to our customers. We will match the price, at the time of purchase, on a Price Match Guarantee product if you find the same item at a lower price at a Designated Major Online Retailer or at a local retail competitor's store.

Here's how:
  • If you find a qualifying lower price online, call 1-888-BEST BUY and direct a customer service agent to the web site with the lower price, or when visiting a Best Buy store, one of our employees will assist you.
  • On qualifying products, Best Buy will then verify the current price to complete the price match.

Exclusions apply including, but not limited to, items sold by Marketplace vendors, Competitors' service prices, special daily or hourly sales, and items for sale Thanksgiving Day through the Monday after Thanksgiving. See the list of Designated Major Online Retailers and full details.

$19.99
Directed Electronics - Viper Pulse Timer Relay - Angle
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  • Model: 528T
  • SKU: 4168965
From our expanded online assortment; compatible with most Viper alarm systems; temporary connect or disconnect circuit; timer-controlled; runs up to 90 sec.; SPDT relay
Price Match Guarantee

Best Buy is dedicated to always offering the best value to our customers. We will match the price, at the time of purchase, on a Price Match Guarantee product if you find the same item at a lower price at a Designated Major Online Retailer or at a local retail competitor's store.

Here's how:
  • If you find a qualifying lower price online, call 1-888-BEST BUY and direct a customer service agent to the web site with the lower price, or when visiting a Best Buy store, one of our employees will assist you.
  • On qualifying products, Best Buy will then verify the current price to complete the price match.

Exclusions apply including, but not limited to, items sold by Marketplace vendors, Competitors' service prices, special daily or hourly sales, and items for sale Thanksgiving Day through the Monday after Thanksgiving. See the list of Designated Major Online Retailers and full details.

$29.99
CompuStar - LT Series All-in-one CS5502-A Security Bundle - Larger Front
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  • Model: CS5502-A
  • SKU: 5133900
Compatible with Over 95% of vehicles; 2-way LCD remote; keyless entry; DroneMobile ready; alarm alerts; additional 1-way remote
CompuStar - DroneMobile Hardwire Harness - Black - Larger Front
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  • Model: DR-HRN-3KHW
  • SKU: 9331077
COMPUSTAR DroneMobile Hardwire Harness: Compatible with DroneMobile vehicle telematics systems; connects to vehicle's onboard power and accessory system; provides solo operation of the DR-3100; multiple auxiliary outputs
Price Match Guarantee

Best Buy is dedicated to always offering the best value to our customers. We will match the price, at the time of purchase, on a Price Match Guarantee product if you find the same item at a lower price at a Designated Major Online Retailer or at a local retail competitor's store.

Here's how:
  • If you find a qualifying lower price online, call 1-888-BEST BUY and direct a customer service agent to the web site with the lower price, or when visiting a Best Buy store, one of our employees will assist you.
  • On qualifying products, Best Buy will then verify the current price to complete the price match.

Exclusions apply including, but not limited to, items sold by Marketplace vendors, Competitors' service prices, special daily or hourly sales, and items for sale Thanksgiving Day through the Monday after Thanksgiving. See the list of Designated Major Online Retailers and full details.

$19.99
Directed Electronics - Ultrasonic Security Sensor - Larger Front
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  • Model: 509U
  • SKU: 6891058
Detects movement inside a vehicle and triggers an alarm; wiring interface harness; mounting hardware
Price Match Guarantee

Best Buy is dedicated to always offering the best value to our customers. We will match the price, at the time of purchase, on a Price Match Guarantee product if you find the same item at a lower price at a Designated Major Online Retailer or at a local retail competitor's store.

Here's how:
  • If you find a qualifying lower price online, call 1-888-BEST BUY and direct a customer service agent to the web site with the lower price, or when visiting a Best Buy store, one of our employees will assist you.
  • On qualifying products, Best Buy will then verify the current price to complete the price match.

Exclusions apply including, but not limited to, items sold by Marketplace vendors, Competitors' service prices, special daily or hourly sales, and items for sale Thanksgiving Day through the Monday after Thanksgiving. See the list of Designated Major Online Retailers and full details.

$89.99
Directed Electronics - Closed-Loop Sensor - Larger Front
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  • Model: 502T
  • SKU: 3025365
From our expanded online assortment; ideal for use with auxiliary lights, car covers and trailers; triggers an alarm when disconnected
Price Match Guarantee

Best Buy is dedicated to always offering the best value to our customers. We will match the price, at the time of purchase, on a Price Match Guarantee product if you find the same item at a lower price at a Designated Major Online Retailer or at a local retail competitor's store.

Here's how:
  • If you find a qualifying lower price online, call 1-888-BEST BUY and direct a customer service agent to the web site with the lower price, or when visiting a Best Buy store, one of our employees will assist you.
  • On qualifying products, Best Buy will then verify the current price to complete the price match.

Exclusions apply including, but not limited to, items sold by Marketplace vendors, Competitors' service prices, special daily or hourly sales, and items for sale Thanksgiving Day through the Monday after Thanksgiving. See the list of Designated Major Online Retailers and full details.

$19.99
Directed Electronics - Angled Pin Switch Brackets (10-Pack) - Angle
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  • Model: 8615
  • SKU: 3025747
From our expanded online assortment; compatible with most alarm pin switches; allows mounting of a pin switch; steel construction; sliding design
Price Match Guarantee

Best Buy is dedicated to always offering the best value to our customers. We will match the price, at the time of purchase, on a Price Match Guarantee product if you find the same item at a lower price at a Designated Major Online Retailer or at a local retail competitor's store.

Here's how:
  • If you find a qualifying lower price online, call 1-888-BEST BUY and direct a customer service agent to the web site with the lower price, or when visiting a Best Buy store, one of our employees will assist you.
  • On qualifying products, Best Buy will then verify the current price to complete the price match.

Exclusions apply including, but not limited to, items sold by Marketplace vendors, Competitors' service prices, special daily or hourly sales, and items for sale Thanksgiving Day through the Monday after Thanksgiving. See the list of Designated Major Online Retailers and full details.

$19.99
Directed Electronics - Straight Pin Switch Brackets (10-Pack) - Angle
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  • Model: 8614
  • SKU: 3025847
From our expanded online assortment; compatible with most aftermarket alarms; allows mounting of a pin switch; steel construction; sliding design
Price Match Guarantee

Best Buy is dedicated to always offering the best value to our customers. We will match the price, at the time of purchase, on a Price Match Guarantee product if you find the same item at a lower price at a Designated Major Online Retailer or at a local retail competitor's store.

Here's how:
  • If you find a qualifying lower price online, call 1-888-BEST BUY and direct a customer service agent to the web site with the lower price, or when visiting a Best Buy store, one of our employees will assist you.
  • On qualifying products, Best Buy will then verify the current price to complete the price match.

Exclusions apply including, but not limited to, items sold by Marketplace vendors, Competitors' service prices, special daily or hourly sales, and items for sale Thanksgiving Day through the Monday after Thanksgiving. See the list of Designated Major Online Retailers and full details.

$19.99
Directed Electronics - Pin Switches for Most European Models (5-Pack) - Angle
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  • Model: 8608
  • SKU: 3025801
From our expanded online assortment; compatible with most aftermarket alarms; keeps remote starts from activating with the hood is up; adjustable right-angle design; 5-pack
Price Match Guarantee

Best Buy is dedicated to always offering the best value to our customers. We will match the price, at the time of purchase, on a Price Match Guarantee product if you find the same item at a lower price at a Designated Major Online Retailer or at a local retail competitor's store.

Here's how:
  • If you find a qualifying lower price online, call 1-888-BEST BUY and direct a customer service agent to the web site with the lower price, or when visiting a Best Buy store, one of our employees will assist you.
  • On qualifying products, Best Buy will then verify the current price to complete the price match.

Exclusions apply including, but not limited to, items sold by Marketplace vendors, Competitors' service prices, special daily or hourly sales, and items for sale Thanksgiving Day through the Monday after Thanksgiving. See the list of Designated Major Online Retailers and full details.

$19.99
CompuStar Alarm System and Geek Squad® Installation - largeImage
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  • SKU: 9999256100050002
Package includes an alarm system with high-decibel, 6-tone siren and and shock sensor, and two 1-way remote transmitters for keyless entry from up to 200' away. Plus installation performed at your local Best Buy store by MECP-certified Geek Squad Autotechs, whose workmanship is warrantied for life.

CompuStar Alarm System for Most Vehicles
  • 6-tone siren
  • Shock sensor
  • Expandable vehicle monitoring zones
  • DroneMobile app (download required)
  • two 1-way remote transmitters with a 200' range
$249.99
Save $149.99 (Reg. $399.98)