Are there different types of batteries other than the standard 9V?
http://www.batterydepot.com
has so many to look at, which one is the type that I'd need?
And, what is power needed for?
a) LED indicators: are they needed? In SMV the LED indicators which ate up a lot of battery life were used to calibrate the sensors. Perhaps the sensors could be calibrated without the use of an LED. Or, perhaps the LEDs could be turned off after the sensors have been calibrated.
b) Amplifiers and Speakers: I suspect the bulk of the power is going to be needed to bring the sound out of the units and make them loud enough to hear in the space. As was pointed out to me, without sufficient power, the amp might only be able to play the chip once.
c) The power to run the actual unit. I have no idea how much power this would need.
What about a timer?
A timer could be set to turn the unit on and off so no technicians would be needed to turn the installation on or off. or, would the power needed to run the timer cancel itself out?
http://www.batterydepot.com
has so many to look at, which one is the type that I'd need?
And, what is power needed for?
a) LED indicators: are they needed? In SMV the LED indicators which ate up a lot of battery life were used to calibrate the sensors. Perhaps the sensors could be calibrated without the use of an LED. Or, perhaps the LEDs could be turned off after the sensors have been calibrated.
b) Amplifiers and Speakers: I suspect the bulk of the power is going to be needed to bring the sound out of the units and make them loud enough to hear in the space. As was pointed out to me, without sufficient power, the amp might only be able to play the chip once.
c) The power to run the actual unit. I have no idea how much power this would need.
What about a timer?
A timer could be set to turn the unit on and off so no technicians would be needed to turn the installation on or off. or, would the power needed to run the timer cancel itself out?
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