Reed Switch

Reed Switch
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Product Code : RS-3.0-20-S
Brand Name : ODM, OEM
Price And Quantity
  • Minimum Order Quantity
  • 1000 Piece
  • Price
  • 0.79 USD ($)/Piece
Product Specifications
  • Max. Current
  • 0.5A Ampere (amp)
  • Material
  • Ru
  • Insulation Resistance
  • 10ˆ9Ω
  • Contact Resistance
  • 150MΩ Ohm (Ω)
  • Max. Voltage
  • 180VDC/130VAC Volt (V)
  • Operating Temperature
  • -60°C-+125°C Celsius (oC)
  • Size
  • 3.0*20mm
  • Color
  • green glass, or white glass, and golden wire, or sliver wire
  • Weight
  • 1.5kg Kilograms (kg)
Product Description

20mm Silver Reed Switches are used to control the flow of electricity in a circuit. They are made having hermetically sealed glass envelope with pair of contacts on ferromagnetic reeds. Reed switches are generally used in applications or devices that have sensors like alarms, laptops, and refrigerators. 20mm Silver Reed Switches consume no voltage or electricity for their operation. Automatic cars too have reed switches because they have many safety sensors that rely on them.


  • Superior quality
  • Operated with help of magnetic field
  • Compact size

We, Hangzhou Red Fir is main supplier of Reed switches in China. 

We are developing and manufacturing a wide range of high-quality, high-reliability reed switches for India customers.

Main size:  


  • 2.0*10mm
  • 2.0*14mm
  • 3.0*20mm
  • 4.0*28mm
  • 5.0*50mm

-  Founded in 2003, have 50 workers and 2 engineers.

-  ISO9001: 2008 Quality Control Systems.

-  Have got UL,TUV certifications.
-  Main market:  Asia, Europe, Australia, USA

-  Production capability: 25,000pcs every day

Reed Switch Features
Ability to switch up to 10,000 Volts
Ability to switch currents up to 5 Amps
Ability to switch or carry as low as 10 nanoVolts without signal  loss
Ability to switch or carry  as low as 1 femtoAmp without signal loss
Ability to switch or carry up to 7 GigaHz with minimal signal loss
Isolation across the contacts up to 1015 Î©
Contact resistance (on resistance) typical 50 milliOhms (mΩ).
In its off state it requires no power or circuitry
Ability to offer a latching feature
Operate time in the 100 µs to 300 µs range
 Ability to operate over extreme temperature ranges from -55 Â°C to 200 Â°C
Ability to operate in all types of environments including air, water, vacuum, oil, fuels, and dust laden atmospheres
 Ability to withstand shocks up to 200 Gs
Ability to withstand vibration environments of 50 Hz to 2000 Hz    at up to 30 Gs
Long life.  With no wearing parts, load switching under 5 Volts at 10 mA, will operate well into the billions of operation
Reed Switch Structure and Principle of Operation

TheoryCurrent Sensor
OutputDigital Sensor
Cintact Resistance35m Max
Dielectric Strength1500VAC,1minute


Trade Information
  • FOB Port
  • Shanghai
  • Supply Ability
  • 300000 Piece Per Month
  • Delivery Time
  • 10-15 Days
  • Sample Available
  • Yes
  • Sample Policy
  • Free samples are available
  • Packaging Details
  • Brown carton with bubble bag
  • Main Export Market(s)
  • Africa, Middle East, Western Europe, Eastern Europe, South America, North America, Central America, Australia, Asia
  • Main Domestic Market
  • All India


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