SETUP
3-IN-1 Sensor Setup
1Set the A-B-C Switch
The A-B-C switch is located inside the battery compartment. It can be set to A, B or C. However, you must select the same letter choices for both the sensor and the display unit in order for the units to synchronize.
2Install or Replace Batteries
AcuRite recommends high quality alkaline or lithium batteries for the best product performance. Heavy duty or rechargeable batteries are not recommended.
The 3-in-1 sensor requires lithium batteries in low temperature conditions. Cold temperatures can cause alkaline batteries to function improperly. Use lithium batteries in the 3-in-1 sensor for temperatures below -4ºF / -20ºC.
1.Press the release lever and pull off the lower housing of the sensor.
2.Remove the battery compartment cover. Take note of the A-B-C switch setting inside the battery compartment.
3.Insert 4 x AA batteries into the battery compartment, as shown. Follow the polarity (+/-) diagram in the battery compartment.
4.Replace the battery cover and lower housing of the sensor.
A B C
1 A-B-C Switch set to match display unit
2