Rocktron Reaction Tremolo - Manual (Page 11)

How to change the battery:
To change the battery, remove the thumb screws
on the top of the pedal and remove the battery
compartment cover. Remove the old battery and
replace it with a new 9V Alkaline battery. Replace
battery in the same area as the old battery was
located. Place the battery compartment cover on
the pedal and re-insert the thumb screws.
Save yourself tons of money in batteries by
using the Rocktron DC OnTap Universal Power
Supply to power this pedal (sold seperately). The
Rocktron DC OnTap provides a constant flow
of power to the pedal, unlike a battery that will
degrade over time. The Rocktron DC OnTap
Univeral Power Supply can also power up to 20
pedals and can be used with both 110V and 220V
power sources.
Check, www.rocktron.com for more information
on the DC OnTap and where to purchase.