The YL-333 Magnetic Anti-Theft Alarm triggers a 90 to 100dB buzzer the moment its two magnetic halves separate. The magnetic door alarm works by holding an internal reed switch closed while both parts stay in contact. No wiring is needed since it runs on 3V from two AAA batteries already inside.
The yl333 magnetic alarm mounts using included adhesive tape with no screws or drilling required. A non-obvious limitation is that the adhesive loses grip in humid or rough-surface environments, so bathroom door frames may need stronger fixing. The magnetic door security alarm does not have a dedicated on-off switch, so removing a battery is the quickest way to silence it after triggering.
Homeowners, hostel managers, and shop owners use the door alarm sensor to guard doors, cabinets, and drawers. StemVolt provide this unit ready to use from the box.
Related Products:
- Also explore: Electronic Components – IC, Resistor, Switches
Features:
- Alarm output of 90 to 100dB is loud enough to be heard across a standard room
- Loud buzzer triggers the moment the two magnetic halves separate even by a small gap
- Power supply of 2 AAA batteries keeps the unit fully portable and repositionable anytime
Technical specifications:
| Specification | Details |
|---|---|
| Operating Voltage | 3V Battery powered |
| Alarm Sound | 90–100dB |
| Sound Level | Loud buzzer output |
| Installation Method | Adhesive tape (included) |
| Power Supply | 2 × AAA batteries |
Applications:
- Home front door uses YL-333 Magnetic Anti-Theft Alarm to alert residents when door opens unexpectedly
- Cabinet drawer in an office uses magnetic alarm system to detect unauthorised access during office hours
- Attaches this to room door to get an immediate 90dB alert on any entry attempt
Package includes:
- 1 x YL-333 Magnetic Anti-Theft Alarm
Reviews
Clear filtersThere are no reviews yet.