7
10. Radio Signal Strength Input
To get to this mode press the TEST button twice and the MENU button twice "rIn" will then flash
in the display. This mode allows the Head unit and Monitor to exchange messages (this mode is disabled
when in the 784 mode since the 784 does not resend any messages). When the Head unit sends a
message, the Monitor knows that the Head unit is in this mode and resends the message. The
Head unit stays awake in order to receive this resent message. The Head unit measures the
strength of the signal and displays it (the maximum Value is 255); the units should work
properly until the signal level drops to about 50.
( Caution: since the radio stays awake for this test, the battery is being discharged much faster in this
mode, so try to spend as little time in this test as possible.)
The Head unit transmits a message once per second and the Monitor responds immediately, so
the test must be performed for at least one
second. The Head unit can be moved away from obstructions, up or down or pointed to get
the best reading. When the MENU button is pressed to leave this mode, the last reading
taken will be stored in memory; the stored reading will be included in the messages to the
Monitor, so this reading can be examined at the Monitor. If no Monitor is in range, the
readings will be very low or zero.
11. OFF
To put the Head unit in the OFF mode, press the TEST button for about 4 seconds. The
display will show "OFF".
This mode disables all transmissions by the Head unit. The unit will transmit a message every 5
minutes with no gas present or every 5 seconds when the gas level is equal to or greater
than the background setting. To reduce the battery discharge, the unit can be set in OFF
mode, where it will never transmit. To wake the Head unit, press MENU, Up or TEST, and the unit will
begin the start up sequence.
12. Startup
When the RL101 is powered or awakened, it will display several values, like gas type,
address and battery voltage, then the unit will count up to 30 seconds and go into normal operation.
