Brian, URO, I think the MS14A can be programmed for night only detection, here is excerpt from instructions:
To set whether you want the Motion Sensor to transmit EVERY time it sees motion or only at night:
Press the Unit/Off button once. The red light flashes. Then, (within 3 seconds) press and hold the House/On
button. The green light turns on. 3 seconds later the Motion Sensor reports its dusk/dawn setting as follows:
The red light blinks once if the Motion Sensor is set to detect motion at all times.
The red light blinks twice if the Motion Sensor is set to detect motion only when it’s dark.
To change this, Press the Unit/Off button once. The red light flashes. Then, (within 3 seconds) press and hold
the House/On button. The green light turns on. 3 seconds later the Motion Sensor reports its dusk/dawn setting,
as listed above. Release and immediately press the House/On button ONCE for operation at all times, or
TWICE for operation only at night. Hold the button for 3 seconds on your last press. The red light then
reports the setting with 1 or 2 blinks.
URO,
I can't explain this any clearer than the printed instructions above. The BOLD print is the specific intructions to make the MS14A night only detection. Maybe you can find someone locally who reads English to help you.
As far as where do you mount the Eagle Eye to see your movements in the bathroom...I have no idea, you will have to experiment. The size and layout of the room must be considered. You might try mounting the Eagle Eye on the ceiling, facing downward over the area you want covered? Remember the Eye detects movement. Standing in front of mirror shaving, or sitting on "the throne" may not produce enough movement for the Eagle Eye to detect. Again, you need to experiment yourself, it might require more than one motion sensor.