Reed Relays and
Electronics India Limited
Manufacturer of Reed Switches, Reed Sensors and Reed-based products
Reed Relays and Electronics India Limited Incorporated in 1971

MS-104 Ultra Miniature PCB Mountable Reed Sensor

PCB mountable ultra miniature SIP reed sensor drawing
MS-104 actuation distance
MS-104 actuation distance


Does not require power for operation  Normally Open Form A contact  Sputtered Ruthenium contact  Omni-polar device; actuates with either pole of magnet  10.1 mm pin pitch  Two magnetic sensitivity bands  RoHS Compliant and Lead-free  Not Sensitive to ESD


This ultra miniature PCB mountable reed sensor is designed for switching 10W.  The internal blades always parallel to the top surface of the sensor. The sensors are tested 100% for operate and release AT, Contact Resistance and Variable Contact Resistance before packing. Our products are completely Lead-free and conform to the RoHS directive.


This reed sensor is suitable for use in the following applications and in many others: telephone hook switches, detergent level sensing in washing machines, electric tooth brushes, sewing machine pedals, fluid tank cap sensing, two wheeler side stand, fluid level sensing, automobiles with electronic keys, survival rafts and ELTs, lightsabershands free kits, fuel pumps


Contact Form A
Contact Rating (max) W/VA 10.0
Switching Current (max) A 0.5
Carry Current (max) A 0.5
DC Switching Voltage (max) VDC 100
Breakdown Voltage (min) VDC 150
Contact Resistance (max) 200
Operating Temperature °C -40 to +100
Shock Resistance (½Sin wave for 11ms) G 30
Vibration Resistance (10-2000Hz) G 20

Ordering Code

MS-104-(Operate AT Code)

OAT Code AT Band
1 10-15
2 15-20

Operate AT bands indicated above are for unmodified reed switch.
Example: MS-104-1
Denotes MS-104 Reed Sensor in 10-15 Operate AT

Other Special Configurations Available

Dynamic Contact Resistance Limit
Special Release AT Limits
Gold plated leads

Possible magnet actuations

PCB Mountable Reed Sensor Actuation Examples
A few examples of magnet actuation are shown above. Being an omnipolar device, this sensor can be actuated with either a north pole or a south pole or both. Choosing the right AT band, magnet strength, and operating axis, will restrict the number of operates and releases to one. Click here to view actuation distances of this sensor with the standard magnets.

MS-104 Ultra Miniature PCB Mountable Reed Sensor
Ultra Miniature PCB Mountable reed Sensors: 10W, omnipolar, complete data sheet and technical specifications.
Brand: RRE
Manufacturer: Reed Relays and Electronics
Model: MS-104
3.5 based on 2 reviews