12Volt DC Installations
The Dock-N-Talk and other Phone Labs equipment actually operates on 9V DC so you MUST purchase a 12V to 9V power adapter. A good adapter is the Radio Shack 9V DC power adapter (RS Part #273-1863) for $19.99 and "N" adaptaplug (free with the purchase of the power adapter). This adapter puts out 1000mA and the Dock-N-Talk pulls 700mA so it works well in this application. Be sure that you connect the adaptaplug in the "+" position on the end of the power cord.
Lindsay Manufacturing and D&J Enterprises recommends that if you are using the Dock-N-Talk with a Lindsay Zimmatic irrigation pivot unit that you connect the Dock-N-Talk as mentioned above to the available 12V power supply at the pivot computer. The transformer in the pivot may put out well over 120V AC and WILL burn out the 120V AC power supply that comes with the Dock-N-Talk. This will also void the warranty on the power supply from Phonelabs.
This setup will work for any mobile or pure 12 volt DC application. A 12 volt heavy duty battery (marine or truck) can actually operate the Dock-N-Talk equipment for several days before the battery needs recharging. You can also use this type of connection for alarm systems by tapping into the alarm system's 12 volt back-up power supply. This power supply is usually on a slow or trickle charger anyway, so you won't run out of power.