Instruction/ maintenance manual of the product D-21A(/K) Linear
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DESCRIPTION The D-21A(/K), D-24A(/ K), and D-26A(/K) are digitally coded stationary radio transmitters triggered by normally open (N/O) or normally closed (N/C) sensors. These transmitters can be pr ogrammed to activate any of Linear’s standard digital receivers that are tuned to the same frequency.
STEP 3: Attach wires from the sensor switch to the transmitter screw terminals. Wire normally closed switches in series, and normally open switches in parallel (see Figures 5 & 6). NOTE: A maximum of wire run of 50 feet with a total of four switches may be used with one transmitter.
An important point after buying a device Linear D-21A(/K) (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Linear D-21A(/K) yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Linear D-21A(/K) - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Linear D-21A(/K) you will learn all the available features of the product, as well as information on its operation. The information that you get Linear D-21A(/K) will certainly help you make a decision on the purchase.
If you already are a holder of Linear D-21A(/K), but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Linear D-21A(/K).
However, one of the most important roles played by the user manual is to help in solving problems with Linear D-21A(/K). Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Linear D-21A(/K) along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
