Magnetic Contacts from
Anyone can boast about their magnetic contacts' quality. But look deep inside the magnetic contact, where human eyes seldom go, and see the quality offered only by SECO-LARM. Step inside, and see the world-wide patented reed switch with a unique deactivated rhodium plating. See the unique glue and epoxy combination. See the advanced engineering and detailed quality control. And understand how SECO-LARM can offer the most reliable contact available anywhere, especially at the lower voltage levels normally used in security systems.  
Surface Mount
Wide Gap
Self Stick
1/4" Recessed
Steel Door Plugs
3/8" Press Fit
3/8" Stubby
Overhead Door
Screen
Roller Ball
Accessories
Bare Magnets

THE BEST CONTACTS
SECO-LARM’s UL Listed magnetic contacts were tested under UL standard 634 specifically for Burglary Protection (SECO-LARM Test No. BP3821). Many competitors’ products are listed under the much less stringent Electrical Testing standards only.
SPECIFICATIONS
SPECIFICATIONS    
RATING
Contact capacity: 10W (max.)
Switching voltage: 100VDC or 100VAC (max.)
Switching current: 300mA (DC) (max.)
Carry current: 800mA (max.)

RESISTANCE
Contact (initial): 0.1 ohm (max.)
Wire leads: 0.3 ohm (max.)

SWITCH CYCLES
50 million (5VDC, 0.1mA)

TEMPERATURE
-15OF (-25OC) to 160OF (70OC)

DIELECTRIC STRENGTH
200VAC

BREAKDOWN VOLTAGE
200VDC between contacts

OPERATING CHARACTERISTICS
Operation time: 0.4 msec. (max.)
(0.3 msec. for SM-209 and SM-266)
Bounce time: 0.4 msec. (max.)
(0.5 msec. for SM-209 and SM-266)
Release time: 0.05 msec. (max.)
Resonant frequency: 3700Hz + 300Hz
(2750Hz + 250Hz for SM-209 and SM-266)
Operating frequency: 500Hz (max.)

ENVIRONMENTAL SPECS (Switch)
Shock: up to 30 gms for 11 msec.
Vibration: up to 20 gms at 10-55 Hz
Lead tensile strength: up to 4.4 lb.
(2 kg.) static load

MATERIAL
Case: Weatherproof, high-impact ABS plastic
Reeds: Nickel/iron alloy base, gold under-plate,
deactivated rhodium outer-plating
Magnets: Alnico 5 (except where noted)
Leads: #22AWG, 15" (38cm), copper alloy
(where applicable)

WE SHIP NATIONWIDE
CCTV and Security Systems on GSA Contract
We Accept Purchase Orders
In addition to all the major credit cards we accept purchase orders from Fortune 1000 corporations, educational institutions, and government agencies.
All purchase order terms are Net 30 days. Please fax your purchase order to (718) 259-3294
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