Product Description
Detex MS-1039S Balanced Magnetic Switch - Surface Mount
Standard magnetic contacts can be defeated with external magnets—hold one up to the frame and the alarm thinks the door is closed. The Detex MS-1039S is a balanced magnetic switch that detects that trick. UL 634 Level 2 high-security rated for applications where tamper resistance matters.
Why You Need It:
- Balanced Design: Detects external magnet defeat attempts. Knows the difference between the real magnet and a fake.
- UL 634 Level 2: High-security sensor standard. Meets requirements for monitored alarm systems.
- Surface Mount: Clean installation with no mortising. White housing blends with most frames.
- Closed Loop: Normally closed contacts for fail-secure alarm integration.
Locksmith's Notes:
| Compatible With | EAX-500, EAX-2500, EAX-3500 series alarms |
| Mount Type | Surface |
| Color | White |
| Security Rating | UL 634 Level 2 |
| Contact Type | Normally Closed |
Pro Tip: Gap between magnet and switch should be 1/2" or less for reliable operation. More gap means more sensitivity to vibration and environmental factors.
Product Videos
Custom Field
Series EAX-500
Function Magnetic Switch
