When using RKE (remote keyless entry) in your product design, you need to provide both the product itself and the key fob with an encoder. The OKW AM-110 Series of encoder transmitters simplifies your task, because it implements the entire remote function, including the enclosure (Picture). Operating at 315 MHz, the 10-mW, FCC-compliant unit includes an LED to indicate transmission in progress, with typical range to about 100m (300 ft).
The RKE unit uses the 64-bit code-hopping Keeloq protocol from Microchip Technology (www.microchip.com) and works with corresponding Microchip Keeloq decoders. OKW offers three rugged molded-plastic enclosures with one, two, or three switches to match your application requirements. Prices begin at $12.
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