Specifications

You will be hooking up your electronics to the OUT side of the Remote Swtich. The Remote
Switch basically replaces the battery input on your altimeter, which is why you want to be
using the same battery that you’d be using for your altimeter. Connect the “+” side of the OUT
terminal to the “+” battery input on your altimeter, and the “-“ side of the OUT terminal to the
“-“ battery input on your altimeter.
Since the Altimeter is going to be switched on and off by the Remote Switch, you will need to
shunt any separate switch input that your altimeter may have. Generally, all you need to do is
to connect a short piece of wire between the two switch terminals. When you turn on (and off)
your Remote Switch, it will then power on (or off) your electronics.
Getting to Know Your Remote Switch
Once you have the battery connector installed, hook up your battery. The buzzer should sound
for about one second, and you should immediately see a RED light on the PT2272 receiver
module. If you do not, disconnect the battery and check your connections. If they look OK,
go to the Troubleshooting section for further assistance.
Now, try pressing the buttons on your remote. As you press each button, the amber BTN light
should flash, and you should hear a “chirp” from the buzzer than acknowledges that your
button press was received. Go through the buttons to make sure that they all work.
Let it sit for awhile… after about 30 seconds, you’ll hear a single “chirp”. This lets you know
that the battery is connected, but the switch is OFF. We do this because you’re not going to be
able to see the LED’s once the Remote Switch is buttoned up in your AV bay, so the audible
indication tells you about the switch’s status. Since the Remote Switch uses a small amount of
power from the battery even when it’s “OFF” (about 15 mA), you’ll want to know if the
battery is connected; you don’t want to leave connected for a week after your flight and
accidentally run down your battery!
Now we’re going to change the code, since the default code “DDDDDDDD” is not a valid
code. (It’s the “program me” instruction). Disconnect the battery, wait a few seconds, then
reconnect the battery. After the long beep, press the “D” button 8 times… the beeper should
beep 3 times to confirm that you are now in programming mode. Note that you can only go
into programming mode immediately after power-up; you have 20 seconds to press
“DDDDDDDD”. After that, if you enter the D’s you’ll just get a long beep to let you know
that it’s an invalid command.
Once you’re in programming mode, press any combination of 8 buttons (however they cannot
all be the same button…) to set the new combination. After the last button press, the buzzer
should beep 3 times to confirm that the code has been accepted. The code gets saved into non-
volatile memory, so it will be “remembered” until you change it again, even after you
disconnect the battery. Note that if you wait more than 5 seconds between a button press it will
abort the programming process, and give you a long beep to let you know that this has
happened. You’ll have to disconnect/reconnect the battery to put it back into programming
mode.