Wireless Comes Of Age

Larco has developed transmitters and receivers designed for compatibility with virtually all automatic door operators and control devices.


The term wireless is liberally applied to all type of technology these days. It broadly describes the means by which a signal or data gets from a point to another or to many other points. For example, some wireless devices report status to a receiver, like a button is pressed, or a door is...


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The term wireless is liberally applied to all type of technology these days. It broadly describes the means by which a signal or data gets from a point to another or to many other points.

For example, some wireless devices report status to a receiver, like a button is pressed, or a door is opened, or a signal voltage has been applied to the inputs of some sort of transmitter or transponder. In other applications, a camera will transmit video data to a receiver, or a card reader will transmit a card number to an access controller.

Wireless devices have come down in cost, are increasingly compact and solve many problems. The technology keeps re-inventing itself.

One of the issues that initially slowed down deployment of wireless was power requirements of the transmitters. Large batteries kept wireless products in the “toy” or “gadget” category.

Battery technology improved dramatically .. Servo motors with small power requirements transformed the electromechanical lock industry. These developments brought portability and wireless operation closer to reality.

Telemetry continues to be an important part of the puzzle. Developments of radio equipment operating at higher frequencies are less vulnerable to traditional forms of interference. Using miniaturized circuitry opened the door further to dramatic new product developments.

I look at wireless as a way to avoid crawling in an attic or falling off a ladder. Whatever area of security you're involved in, you owe it to your clients and the profession to learn all you can and do the best job possible.

Digital processing and fabrication technologies are perhaps the Nexis of this entire world of advancements. When I was a kid, the transistor was the breakthrough that moved electronics away from vacuum tubes to the solid state. Logic was nothing new, but using it to create functional processes electronically was pretty new.

The next transition was the integrated circuit. Referred to as “small-scale integration” (SSI), improvements in technique has led to devices with hundreds of logic gates, referred to as large-scale integration (LSI). Current technology has moved far past this to today's Very Large Scale Integration (VLSI) which is the process of creating integrated circuits by combining thousands of transistor-based circuits into a single chip.

Microprocessors having many millions of gates and hundreds of millions of individual transistors are VLSI devices.

Remote Door Control is one of the more traditional applications for wireless electronics.

On two recent projects I required a wireless door control solution, and chose one of the more advanced products available for this application from LARCO.

 

LARCO APPLICATIONS

Larco , a leading manufacturer of automatic door activation and safety products, has developed transmitters and receivers designed for compatibility with virtually all automatic door operators and control devices.

The ultra-small transmitters measure 1.25” x 0.875” x 0.25” and the receivers measure 2.25” x 1.25” x 0.75. Their size and excellent range makes it easy to locate the receiver inside the header, maintaining the clean architectural lines and reducing vandalism.

The units are factory pre-wired so installation is as easy as attaching the battery and pushing the programming buttons.

Larco's new transmitter and receiver units may be used with Larco's shallow profile universal wall switch and jamb switch box assemblies, or used for retrofit applications in conventional handicapped controls. When combined, these two new products become one of the smallest, most space efficient and most durable wireless automatic door control devices available.

The Larco Ultra-Small Transmitters and Receivers operate at 433.92 MHz (acceptable in the United States , Canada and any European Union member state) and employ code-hopping technology to reduce false activations.

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