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3. Basic Operation
3.1 Setting up the RH550
With the meter OFF, slide the sensor (3) directly onto the cradle jack (8).
Use the 197cm (6.5’) RH550-C extension cable (5) if you prefer to locate the sensor remote
from the main unit. To use the extension cable, remove the sensor from the RH550 (if
connected) and slide the sensor onto the cradle jack on one end of the extension cable. The
other end of the cable slides onto the RH550 sensor cradle jack (8).
Mount the RH550 on a wall using the supplied wall mount bracket (6) and screws. Mount the
bracket on the wall first and then snap the RH550 onto the bracket. Note that the wall mount
bracket has a swivel arm (10) for convenient angling.
Note: Mount the bracket with the hinge to the right in order for the display to be upright.
3.2 Meter Power
A rechargeable, lithium battery (installed at the factory) powers the RH550.
To switch the RH550 ON or OFF, long press the power button (4).
To recharge the battery, plug the supplied USB cable into the USB jack (2) on the RH550 and
to an AC power source, or connect the RH550 to a PC USB port.
To view battery status while charging, short press the power button.
To put the display in sleep mode manually, when in normal use (not charging), short press
the power button (4).
Use the MAIN MENU to set display options such as screen saver and sleep mode.
