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Neptune Surface Mount Reed Switch - White

Neptune Surface Mount Reed Switch - White

Neptune

$12.00
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SKU:
STK NESMRW
UPC:
9329673146350
Availability:
Usually same day dispatch (if ordered before 11am)
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Neptune Surface Mount Reed Switch - White

The Neptune NESMRW is a surface mount reed switch designed for alarm and access control monitoring. It features an extra wide operating gap of up to 50 millimetres and a normally closed single pole single throw contact for reliable door or window status detection.

Key features icon Key Features

  • Surface mount reed switch for door or window monitoring.
  • Extra wide operating gap up to 50 millimetres.
  • Normally closed single pole single throw contact.
  • Low contact resistance for reliable signalling.
  • White housing suited to light-coloured frames.

Specifications icon Specifications

  • Item Code: NESMRW
  • Type: Reed switch detector
  • Mounting: Surface mount
  • Contact Type: Normally closed, single pole single throw
  • Maximum Gap: 50 mm
  • Maximum Resistance: 0.2 ohm
  • Maximum Rating: 8 watt
  • Maximum Voltage: 100 volt direct current
  • Maximum Current: 500 milliampere
  • Finish: White

Contents icon What's In The Box

  • 1 x surface mount reed switch body
  • 1 x matching magnet

Suitable uses icon Suitable Uses

  • Door and window monitoring in alarm systems.
  • Access control door position monitoring.
  • Installations where a wide operating gap is required.
  • Surface mounted applications where recessed contacts are not suitable.

Dimensions icon Dimensions

Dimension Measurement (mm)
Length 90 mm
Width 13 mm
Height 18 mm

Item code list icon Neptune Surface Mount Reed Switches - Item Code Family

Item Code Contact Type Operating Gap Connection Type Dimensions (L x W x H) Pack Size Notes
NESMRW Normally Closed, Single Pole Single Throw Up to 50 mm Wire lead 90 mm x 13 mm x 18 mm 1 Extra wide-gap surface mount reed switch. White finish.
NESMRB Normally Closed, Single Pole Single Throw Up to 50 mm Wire lead 90 mm x 13 mm x 18 mm 1 Extra wide-gap surface mount reed switch. Black finish only - same mechanical specification.
NESMRTW Normally Closed 50 mm or greater Screw terminals 85 mm x 24 mm x 19 mm 1 Terminal screw mounted version for installations preferring screw connections. White finish.
NESMRCOW Common (Normally Closed and Normally Open) 15 mm or greater Screw terminals 55 mm x 12.5 mm x 11.5 mm 5 Normally Closed and Normally Open contact option with concealed snap-on covers. White finish.
NESMMRW Normally Closed 15 mm or greater Wire lead (350 mm) 23.5 mm x 14 mm x 6 mm 5 Mini reed switch for timber doors and windows. White finish.

FAQ icon Frequently Asked Questions

  • What does normally closed mean for this switch?
    Normally closed means the circuit is closed when the magnet is in position, and opens when the door or window is opened.
  • Where is a wide-gap reed switch used?
    Wide-gap switches are commonly used on doors or gates where alignment is less precise or larger gaps are present.
  • Can this be used with any alarm panel?
    It is typically compatible with most alarm or access control inputs that support normally closed contacts within the specified limits.

Additional information icon Additional Information

  • Wide-gap contacts are often specified on metal doors, gates, or uneven mounting surfaces.
  • Ensure magnet and switch alignment is within the specified gap to prevent false alarms.
  • Commonly used in commercial alarm and access control installations.
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