Door Security Alarms & Jammers

Prevent Forced Entry and Alert to Intrusions

Door security devices including door jammers, door knob alarms, door wedge alarms, and vibration sensors. Portable, renter-friendly protection that requires no permanent installation.

Why Use Door Security Devices?

• Primary Entry Point: 56% of burglars enter through doors (front and back combined)
• Instant Alert: 90-120 dB alarms notify of intrusion attempts immediately
• Physical Barrier: Door jammers prevent forced entry even when locks fail
• No Installation: Most devices require no drilling, screws, or permanent modification
• Portable Security: Travel with devices to hotels, dorms, vacation rentals
• Affordable: Effective protection for under $50 on most models

Door Security Product Types:

Door Jammers & Stoppers

The Door Bull ($49.95): Portable door security jammer prevents forced entry. Wedges under door to reinforce against kick-ins. Works on doors that open inward. Ideal for travel, rentals, home use.

Door Stopper Alarm ($12.95): Wedge alarm that both blocks door and sounds 120dB siren when pressure applied. Dual-function security and alert device.

Door Knob & Handle Alarms

Door Knob Alarm ($10.95): Hangs on door knob, sounds 120dB alarm when knob is turned. Simple installation, battery-powered. Perfect for bedrooms, hotel rooms, rentals.

Door Vibration Alarm ($9.00): Detects vibration when door is touched, opened, or forced. Adhesive mounting on door or frame. Alerts to tampering attempts.

Door & Window Contact Alarms

Door and Window Alarm ($8.95): Magnetic contact sensor sounds alarm when door/window opens. Adhesive installation. Works on doors, windows, cabinets, drawers. Pack of sensors available.

90 dB Window Door Sensors ($12.95): Two-unit pack of magnetic contact alarms. 90dB siren when contact broken. Secures multiple doors or windows.

Specialty Door Security

Guardian Angel Home Defender ($112.50): Door-mounted pepper spray fogger system. Automatically deploys pepper fog when door opens. Professional-grade home defense for main entry points.

3-in-1 Personal Safety Alarm with Light ($11.95): Portable alarm that can hang on door knob. 130dB alarm, flashlight, and strobe light. Multi-purpose security device.

How Door Security Devices Work:

Door Jammers

1. Position jammer on floor against door
2. Wedge creates friction and leverage against forced entry
3. Door cannot be pushed open even if lock fails
4. Portable - remove when leaving or not needed

Door Alarms

1. Mount alarm on door knob, handle, or frame
2. Alarm activates when door is opened or knob turned
3. 90-130 dB siren alerts occupants and deters intruder
4. Battery-powered, no wiring required

Contact Sensors

1. Attach sensor to door frame, magnet to door (or vice versa)
2. When door opens, magnetic contact breaks
3. Alarm sounds immediately
4. Works on doors, windows, cabinets

Best Uses for Door Security:

• Front/Back Doors: Main entry points - use jammers + alarms for dual protection
• Bedroom Doors: Personal safety while sleeping - door knob alarms ideal
• Sliding Doors: Use contact sensors (jammers don't work on sliding doors)
• Hotel Rooms: Portable door jammers for travel security
• Rental Properties: Non-permanent security without landlord approval
• Dorm Rooms: Student housing protection
• Vacation Homes: Alert to entry when property unoccupied

Installation & Setup:

• Door Jammers: No installation - wedge under door when in use
• Knob Alarms: Hang on door knob - ready in seconds
• Contact Sensors: Peel adhesive backing, stick to door and frame
• Vibration Alarms: Attach to door with adhesive strip
• Battery Power: Most use AAA or 9V batteries (included or sold separately)

Door Security Tips:

• Reinforce door frames with longer strike plate screws (3 inches)
• Use door jammers on inward-opening doors only
• Test alarms monthly to ensure battery function
• Layer security: jammer + alarm for comprehensive protection
• Secure sliding doors with contact sensors and blocking bars
• Don't rely on chain locks - easily defeated

TBOTECH Guarantee:

• Fast shipping (free over $50)
• 90-day satisfaction guarantee
• Renter-friendly products
• No permanent installation required
• Battery-powered convenience

Questions about which door security device is right for your situation? Contact us.