Dual Tech motion detectors with dual relay outputs ?

By the way, something that I didn't mention and that you may not have picked up on .... is that the Sentrol dual tech sensors that I mentioned earlier, have "range" control adjustment on the microwave. All other microwave units only adjusts sensitivity, which can still detect movement of large objects at a greater distance ( ie through walls, etc). This could be important, depending upon where you have to mount the unit. You can adjust the Sentrol units down to 9 feet max.

distinctions

The manual for the Bosch DS835i uses the word "range" for the only uWave adjustment provided (via a potentiometer). Maybe that's how they translate Empfindlichkeit (sensitivity) and Verstärkung (amplification) to English (It's them pesky words and definitions again ;-)

What is the difference between "range" and "sensitivity" in the actual physical adjustment being made ?

Thanks .... Marc Marc_F_Hult

On Aug 29, 11:25=EF=BF=BDam, Marc_F_Hult wro= te:

A range adjustment will limit the unit from responding ( ie activating) to doppler shift from moving objects which are beyond the set limit. (BUT ....Don't be misled by this in thinking that the actual total emmision is reduced. The emmision remains the same it's just the doppler response that is adjusted)

Sensitivity sdjustment reduces the amount of emmision from the unit. The difference is that this will not stop the unit from detecting larger objects that are futher away then the unit might be set to only detect a man sized moving object. I call it the "elephant effect"

In other words, a sensivity adjusted unit, set to detect a moving man size object at 30 feet, can still detect an elephant ( or a truck or whatever) moving at ..... say 75 or more feet ..... or .... more withing context of your use ....... a larger than man size object at ....say 40 feet. A range controled unit wont detect anything beyond it's setting.

Also, in case you didn't know, most, many, micro wave units cannot be mounted in close proximity to one another. My rule of thumb is, not closer than something more than twice the maximum rated detection range (regardless of it's range or sensitivity setting) if looking at each others field of detection. Back to back mounting can be closer, like a few feet away, but check with the mfg in all cases where you're mounting two microwave units in proximity to one another. Some mfg units CAN be mounted close to one another, but not all.

As you can see, although Bass says it isn't rocket science he lies when he entices people to buy from him with his simplistic enticement to end users, about the ease of installation. This, followed by his well documented inevitable lackluster performace on follow up and service, puts him at the level of huckster and scam artist. His sole purpose here is to sell equipment regardless of the consequences, under the guise of making it appear simple and that he will give you anything that you want. Just beware where you wind up getting your system and parts. Do your homework with parts and service as well as you're doing your implementation search.

None. It's all hype. It is impractical to set the distance that a microwave signal will travel. It is impossible to predetermine how strong the reflected signal will be. It is easy to determine how strong (object size and other traits) a reflected signal and how much of change in frequency from the emitted signal (object speed and direction) will trip the sensor.

Again, you show your ignorance. A range controled detector doesn't control how far the emission travels. It controls what doppler signal to accept and/or ignore.

A range controled detector will not detect movement beyond the setting chosen, regardless of the size of the moving object beyond the set range.

A sensitivity controled detector will detect movement of a larger object beyond the setting you've chosen.

If you'd ever installed both types of units, you'd know this. But, as we all know ..... you only sell equipment and drop ship it, so you don't actually know what it looks like, how to install it or how it works.