AH502 SW45090 is a twin legend sunlight readable LED backlit aircraft annunciator with momentary or latching DPDT switch with customisation of colors and legends.
This lightweight switch weighs less than 1.2 oz. [34g], mounts into a 0.875” [22.3mm] square mounting hole, and requires approx. 2.40” [61.0mm] of space behind the panel.
The switch is rated at 2.0A resistive at 28 VDC. Other features provided by the SW45090 include Momentary Snap Feel switch mechanism, operating pressure of 32 oz. (+ 8 oz.), plunger travel of approximately 0.25” [6.4mm], and a rated switch life of 100,000 minimum actuations.
Aero Safety Systems have optimized the LED circuitry and optics to provide clear Full Daylight readability whilst also achieving a dead face when not illuminated. Through high quality multi-layer silk screen printing on carefully selected diffusers, filters and hard coat anti-glare coatings; high contrast levels and a crisp legend are achieved. Careful attention to thermal management with high quality LEDs ensures long life. As a further safeguard each legend is triple redundant. Each legend can be directly driven with PWM constant current at 50mA. The circuit is also fitted with a current limiting resistors for either 14 or 28 Volts DC systems.
A range of LED color combinations are available, and the diffuser windows can be be engraved to your requirements.
Alternative colours available
High brightness LEDs for daylight readable legends
Daylight Readable and Hidden until lit
Dead front, hidden until lit annunciator switch
Lightweight, compact and easy to install
Robust, snap action momentary and latching switch
Questions & Answers
Please see the specification sheet for details on how to specify switches. Please contact us if you have any special requirements.