I just got some MS10a's
wow theyre huge!!
whats the difference between the MS10a and the DM10a??
As you've probably discovered by now, the MS10A sends X10 Security RF Alert, Clear (aka Normal), and Alert/Low-battery signals. It sends a heartbeat signal approximately every 90 minutes. A Clear signal always follows 10 seconds after an Alert signal regardless of whether motion is continuing (which seems somewhat senseless). When a low battery condition exits, it ceases to detect motion and sends only the Alert/Low-battery signal at the heartbeat intervals. It has no light sensor. It is intended for use only indoors.
I haven't characterized a DM10A and it's not quite clear exactly what signals it sends since the owner manual primarily describes the results of its interaction with the RoboDog (which also sends signals). It does appear to send X10 Standard RF signals, but only an On signal when motion is detected - no Off signal some time after motion is no longer detected. It has a light sensor and sends On and Off signals at Dusk and Dawn. Whether it additionally transmits some X10 Security RF signals remains to be determined. It is rated for outdoor use.