Chapter 1 — About the Printers
PR2 and PR3 Mobile Receipt Printer User Manual 9
About Printer Power Modes
The printer moves between different power modes to conserve battery 
power. The printer must be in Normal mode to move to another power 
mode.
Printer Power Modes 
Power Mode Description How to Move to This Mode
Off All electronics are off, and the 
printer is not consuming any 
power. 
From Normal mode, press and 
hold the Power button for 5 
seconds. After 2 seconds, the 
three LEDs blink once, and 
after 5 seconds the three LEDs 
blink three times.
Normal The printer and the radio are 
on. If the printer is idle for 
certain configurable amount 
of time, the printer moves to:
• Deep Sleep mode if you 
have a Wi-Fi or IrDA radio.
• Power Save mode if you 
have a Bluetooth radio.
From any other mode, press 
the Power button. The printer 
automatically moves to 
Normal mode from any other 
mode if you connect it to an 
external power supply.
Power Save 
(Bluetooth 
radio only)
The radio is on and the printer 
is off. If the printer receives a 
print command, the printer 
moves to Normal mode.
The printer automatically 
moves to Power Save mode 
after being idle for a certain 
configurable amount of time.
Deep Sleep The printer is in a low power 
consumption mode, and the 
radio is off.
From Normal mode, press and 
hold the Power button for 2 
seconds. The three LEDs blink 
once.