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Site Updated Jan. 6, 2009
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First Technology Products First Technology



Twilight sensor Solar & twilight sensor Fog sensor
Battery Cut-off Switch Fuel Cut-off Switch Maxi Breaker
EXT 200 Circuit Breakers EXT 300 Circuit Breakers EXT 500 Circuit Breakers

Automotive Sensors
Absolute Position Steering Angle Sensor (PDF)
Translate rotational motion into a coherent digital signal. These sensors range from simple incremental up to full multi-turn, lock-to-lock steering. | File size: 100K
Automotive Cooling Fan Protector (PDF)
Protects cooling fan motors in underhood 12 Volt DC applications. | File size: 130K
Crash Sensors (PDF)
On impact, these 360° resettable crash sensors directly shut down the fuel pump or main contractor, reducing risk of fire and electrical shocks after the crash. | File size: 160K
Differential Angle & Absolute Position Angle Sensor (PDF)
A non-contacting method of determining the differential angle between two shafts. Fulfills automotive market needs for measurement of applied torque. | File size: 130K
Fog Sensor (PDF)
Signals moisture level on the interior glass surface. This can be used by the vehicle’s climate control system to determine if the defogger or glass heating elements should be activated. | File size: 130K
Incremental Encoders (PDF)
Translate rotational motion into an easy to interface digital signal. Dual channel output provides an accurate indication of speed, direction and angle of rotation. | File size: 150K
Twilight Sensor (PDF)
Senses when a vehicle headlights should be turned on at dusk and off at dawn. Also senses when headlights should be turned on or off in changing sky conditions. | File size: File size: 280K
Solar Sensor (PDF)
Enhance vehicle climate control systems with SolarWatch®. The sensor generates a signal proportional to the sun’s energy entering the vehicle. The climate control system can then adjust temperature for occupant comfort in sun or cloud. | File size: 340K
Solar & Twilight Sensor (PDF)
Both our Solar and Twilight Sensor technologies in one small package. The solar function enhances the vehicle’s climate control system while the twilight gives automatic headlight control. | File size: 130K
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Automotive Circuit Breakers
EXT 200 Circuit Breakers (PDF)
Commonly used for 12 Volt DC wiring harness protection. Ideal for protecting circuits that may experience momentary overloads, the EXT 200 is often chosen as an alternative to fuses, where nuisance replacement can be inconvenient. | File size: 130K
EXT 300 Circuit Breakers (PDF)
Ideal protection device to guard against momentary overloads. Often chosen as an alternative to fuses, where nuisance replacement can be inconvenient. | File size: 140K
EXT 500 Circuit Breakers (PDF)
Used for wiring harness protection in 12 Volt DC automotive applications. Protects circuits which occasionally experience momentary overloads and in applications where self-resetting devices are preferred. | File size: 140K
Maxi Breaker® (PDF)
Typically used as a wiring harness or cooling fan motor protector in 12 Volt DC automotive applications. | File size: 145K
SMB Series Motor Protectors (PDF)
Snap action circuit breaker designed for DC blower and engine cooling fan motors, pump motors, and other applications up to 42 Volts where over-current or over-temperature protection is required. | File size: 120K
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Electromechanical
Battery Cut-off Switch (PDF)
Ideal for motor vehicles that require the electrical system to be disconnected in a colllision. | File size: 160K
PSMB Bimetallic Protectors (PDF)
A single pole, snap action, automatic reset (SAE Type I or Type II) circuit breaker designed to protect wiring harnesses, battery powered riding toys, portable power tools and many other applications with operating voltage up to 48 Volts DC or 240 Volts AC. | File size: 150K
RP Series Thermal Protectors (PDF)
Ideal for the protection of non-IC recessed lighting fixtures. This patented RP thermal protector is an automatic resetting device that causes the lamp to blink during fault conditions. | File size: 190K
SB/ESB Series Thermal Protectors (PDF)
These thermal protectors can be used for such things as small AC fractional horsepower motors, DC motors, battery chargers, ballasts, Ni-Cad battery packs, transformers and internal protection for compressors. | File size: 230K
The World Depends on Sensors and Controls