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Status messages
1. Normal: Indicates that the sensor reading is above 2 mA and below the alarm set point.
2. Danger: Indicates that the sensor reading exceeds the low alarm setting, but is lower than the high
alarm setting. (Meaning that if the low alarm setting is at 1.0 PPM and the high alarm setting is at
2.0 PPM, then the status will be “Danger” if the reading is between 1.0 PPM and 2.0 PPM.)
3. Alarm: Indicates that the sensor reading exceeds the high alarm setting. (Meaning that if the high
alarm setting is at 2.0 PPM, then status will be “Alarm” if the reading is 2.0 PPM or higher.)
4. Error: Indicates that the sensor signal is below 2 mA and usually indicates that the sensor is
either damaged or not connected.
D. Battery Backup
1. Disconnect the A/C Power before beginning this procedure.
2. The battery has Velcro strips attached. Remove the clear surface protection tape and place the
battery into the bottom of the enclosure with the single strip against the rear of the box.
3. WARNING!!! Pay careful attention to which lead is – and which is + on the battery. The leads
are marked on the battery. If you switch the leads to the circuit board you will damage the
device. Connect the + of the battery to BAT+ and the – of the battery to BAT–.
4. Battery is now installed.
5. See configuration Section II.B of the manual to follow the procedure to activate the battery
backup using the keypad and display.
6. The unit will keep the battery charged and ready for use. The battery will require approximately
12 hours to be fully charged.
NOTE: When the battery level falls below ~8.5 Volts it is automatically disconnected from the
circuit board. After this has occurred, the unit can only be powered up by restoring A/C power.
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