I stopped by Lowes last night to see what they had that I could try out. They carry a good selection of Heath Zenith wireless motion sensor packages, so I was able to pick up the lamp/chime module with motion sensor. The range is much better than the MS16A (as expected), but I'm not sure how I would rate the field of view. They claim 180°, but I'd say it's more like 135° or so. I can see the lens at the sides, but it doesn't detect motion in any direction until I'm further to the front. They make a better looking model that claims 240° FOV, so maybe that one will work to ~180°. That one is only available online in my local, so I'm going to have to be sure the setup will work prior to ordering.
The problem I'm having with it is that it doesn't seem consistent. If anyone else has one of these units set up, I'd like to know what I'm doing wrong.
I started by trying the default dip settings, but that didn't seem to connect. I switched to a different setting and the two units connected. I set the sensor to max range, day/night, and Test mode. This config seems to turn the light on and chime once. It then waits for motion to stop and turns the light off. The minimum lit time seems to be ~10 seconds. Fine...so I took it to the garage and drove the truck past it...nothing. The MS16A kicked on the outdoor lights so I know it should work, but nothing. I got out of the truck and walked up to it and it turned the light on. Hmmm. Problem is, it seems to get confused and sense motion continuously without motion occurring. The remedy is a reset of both units.
For testing I have no problem with a reset or two. I cannot accept ever being required to reset the unit other than to change batteries. If that were required, I'd look for a different unit. So, I'm not sure where to go from here. Maybe I just got a dud?