Magnetic Contacts
Descriptions
What you don't see is what you get! 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.
Specifications
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.

RATING
  • Contact capacity: 10W (max.)
  • Switching voltage: 100VDC or 100VAC (max.)
  • Switching current: 300mA (DC) (max.)
  • Carry current: 800mA (max.)
RESISTANCE
  • Contact (initial): 0.1Ω (max.)
  • Wire leads: 0.3Ω (max.)
SWITCH CYCLES
  • 50 million (5VDC, 0.1mA)
TEMPERATURE
  • -15°F (-25°C) to 160°F (70°C)
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 30gm for 11 msec.
  • Vibration: up to 20gm 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)
View Enlargement
Copyright 2006 by SECO-LARM U.S.A., Inc. All rights reserved. Modified:
Supplier of Security Systems and Accessories Worldwide.