
both models

Close-up

Back sides. One or two batteries are used

Into their plastic case

Inside. In the bottom card, two capacitors replace the second battery. They maintain the power for a few seconds
during battery replacement. The buzzer is located into the back shell.

In pieces

X-ray :)
User manual
To donate your old devices and give them a second life in this collection and this web site - please send us an e-mail to pdaorga@gmail.com