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
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Reed Switches

Automotive

The automobile industry has standardized power levels of 24 VDC or less. Reed Switches perform exceptionally well at such low loads and consequently have very high life. Molded and encapsulated reed sensors are specially manufactured to withstand shock and extremes of temperature and humidity. A few automobile applications are listed below. We have also suggested few of our products for use in each application, but this does not mean that the other products in the same product category will be unsuitable. Click here to download this page as a PDF.

 

Reed sensors in Automobile Sun Visors

Reed sensors in Automobile Sun Visors

A reed sensor and a magnet is used in the sliding mirror assembly to turn off the lamp when the slide is closed in sun visors used in automobiles. Our reed sensors and reed switches are suitable for such applications… Continue reading

Reed Sensors in Electric Car Chargers

Reed Sensors in Electric Car Chargers

Electrical cars are designed to have a range of 250-300 kilometers on a full charge and to ensure that the charging time is minimal 16-32 Amps may be required for charging. For high current charging… Continue reading

 

Reed Sensors for Early Brake Sensing

Reed Sensors for Early Brake Sensing

When the brake pedal is pressed, the magnet is the first to move away from the reed sensor, even before the brake pedal actually works on the brake pads. This triggers the tail lamp very early. Continue reading

Reed Switches in Exhaust Emissions Sensing

Reed Switches in Exhaust Emissions Sensing

A simple vane with a magnet fitted inside the tailpipe of automobiles is used to trigger a reed switch which provides feedback to the CPU is used to adjust fuel mix ratio thereby reducing emission levels. Continue reading

 

Reed Sensors in Automobile Power windows

Reed Sensors in Automobile Power windows

The motor which drives the glass up or down has a multi-pole ring magnet fitted to it that actuates the reed sensor fitted near it to assess the actual position of the glass in automobile power windows. Continue reading

Reed sensors used in Fuel cap position sensing

Reed sensors used in Fuel cap position sensing

Driver information. Instrument panel dashboards need to show more and more information for the safety of the driver and passengers. Special reed sensors which can withstand shock and vibration can be used to… Continue reading

 

Magnet sensors in Anti-lock braking system (ABS)

Magnet sensors in Anti-lock braking system (ABS)

In ABS control, the onboard electronics needs to apply differential hydraulic pressure to each brake to prevent the car from fishtailing and skidding. Four reed sensors are… Continue reading

Reed switches in Coolant flow sensing

Reed switches in Coolant flow sensing

A simple, cost effective reed switch based flow sensor can be connected in the coolant line of automobiles. As long as the coolant is flowing, the reed sensor does not actuate. If by chance, there is a block or if the coolant valve malfunctions… Continue reading

 

Reed switches in Defective lamp detection

Reed switches in Defective lamp detection

Tail lamps and parking lamps are very vital elements of an automobile and any failure could cause accidents. Reed relays, by virtue of their small size and high life, find an important role in these applications. A reed relay and a resistor are… Continue reading

Reed sensors and Magnet sensors in Two wheeler applications

Reed sensors and Magnet sensors in Two wheeler applications

Motor bikes and other two wheelers use plunger type switches for detecting depression of the front and rear brake levers to switch the brake light on, and also for detecting the side stand position etc. These plunger type switches are purely mechanical and… Continue reading

 

Magnet sensors in Low fluid level monitoring

Magnet sensors in Low fluid level monitoring

Wind screen viper fluid, brake oil, power steering oil, and radiator coolant tanks can be fitted with a foamed magnet float attached to the inside stem of the cap. A reed sensor can be mounted outside the tank at… Continue reading

Magnet sensors in Hydraulic arm position sensing

Magnet sensors in Hydraulic arm position sensing

Bulldozers, earth movers, tractors, fork lifts and garbage compactor trucks use hydraulics to move cylinders and pistons to carry out various jobs. Reed Sensors can be used on these pistons and cylinders to sense… Continue reading

 

Reed switches in Seatbelt lock sensing

Reed switches in Seatbelt lock sensing

In some cars, the seat belts need to be "clicked" in, or the display flashes a message. Vane sensors are fitted inside the seatbelt locks female side, and when the seat belt lock is inserted, and comes in between, the magnetic field is… Continue reading

Accidental airbag deployment prevention

Accidental airbag deployment prevention

When a collision occurs, accidental deployment of the airbags is prevented, by sensing whether passengers are sitting on the seats for which airbags are present. A reed sensor is mounted under the seat and a magnet fitted into the foam… Continue reading

 

Reed sensors in Door sensors for cars with electronic keys

Reed sensors in Door sensors for cars with electronic keys

In newer cars with electronic keys, the key code is compared with onboard computer which then sends a signal to the central locking system. Although these doors are controlled by remote also, for manual opening of the doors, reed sensors are… Continue reading

Reed switches for Inclination sensing

Reed switches for Inclination sensing

Recent statistics on automobile accidents reveal that the majority of fatalities arise due to side-wise roll over. Reed Switch based inclination sensors sense side-wise roll over and front and rear impact for triggering airbags… Continue reading

 

Magnet sensors for speed sensing

Magnet sensors for speed sensing

A multi pole ring magnet can be attached to the speedometer actuating shaft, and a reed sensor can sense the pulses and generate a square wave. The onboard electronics can use these square pulses to calculate RPM and speed. In automobiles… Continue reading

Thermal sensors in Climate Control equipment

Thermal sensors in Climate Control equipment

Miniature reed relays, capable of switching high loads are used in automobile climate control circuits to switch on or switch off the heater and coolers. Thermal reed sensors can also be used to trigger these relays at required temperatures… Continue reading

 

Reed sensors in Accurate fuel level sensing

Reed sensors in Accurate fuel level sensing

Special reed sensors with an integrated resistor can be mounted on PCBs to give out a potentiometric feed back across two outputs as a foamed magnetic float moves along its length. The PCB tracks can be designed… Continue reading

Thermal sensors in Radiator, engine, and 4WD transmission temperature sensing

Thermal sensors in Radiator, engine, and 4WD transmission temperature sensing

Thermal reed sensors can be mounted on the engine block to sense high temperatures and give an indication on the instrument panel. Thermal reed sensors, capable of switching loads as high as 60W… Continue reading