LOW BATTERY
Base unit: replace the batteries if readings grow dim or irregular.
Remote sensor: replace the batteries if the red light on the sensor stops flashing approximately every 57 seconds, or if
transmission signals seem weak or irregular.
Always replace all batteries in each unit at the same time; do not mix old and new batteries. Do not mix alkaline, standard
(carbon-zinc) or rechargeable (ni-cad, ni-mh, etc.) batteries.
NOTE: Please recycle or dispose of batteries per local regulations.
WARNING: Batteries may pose a choking hazard. As with all small items, do not let children handle batteries. If
swallowed, seek medical attention immediately.
PRECAUTION: Do not dispose of batteries in fire. Batteries may explode or leak. Remove the batteries if the units will
not be used for a long period of time.
PROBLEM SOLVING
1. If the base unit does not receive a transmission from the remote sensor for one hour, the outdoor temperature and
humidity displays will show dashes (“- -”). Press and hold the “-” button on the back of the base unit to force a
transmission signal. If the connection still fails:
a) Check that the remote is properly positioned, within the appropriate transmission range (200 feet). Transmissions are
vastly affected by building materials and where the receiver and remote units are positioned. Try various set ups for the
best results. Shorten the distance between receiver and remote units when necessary.
b) Check to make sure the transmission path is clear of obstacles and interference.
c) Place the remote sensor closer to the base unit.
d) Remove and reinstall all batteries. Try fresh batteries.
2 If the temperature higher than the range of the unit, the display will show “HH.H”. If the temperature is lower, the
display will show “LL.L”.
If the humidity is higher than the range of the unit, the display will show “HH”. If the humidity is lower, the display will
show “LL”.
● Indoor temperature range is 32°F to 122°F (0°C to 50°C).
● Outdoor temperature range transmitted by remote sensor is -4°F to 140°F (-20°C to 60°C) using alkaline
batteries. (Use of Lithium batteries can extend the range to -40°F to 140°F / -40°C to 60°C.)
● Indoor and outdoor humidity range is 20-95% RH.
4. The temperature sensors are manufactured to the accurate within plus or minus 2°F (1°C) within a temperature range
from 32 to 104°F (0 to 40°C) and plus or minus 4°F (2°C) outside that range. Therefore, 2 units placed next to each other
may report different readings. This is a normal occurrence with digital sensors and should not be considered a defect.
5. For maximum performance in normal conditions, good quality alkaline batteries are recommended. When temperatures
are below 0°F, alkaline batteries can lose power resulting in a loss of remote transmission. If you reside in an area that
experiences frequent temperatures near or below 0°F, lithium batteries are recommended to minimize the loss of
transmission.
TRANSMISSION COLLISION
Signals from other household devices, such as doorbells, home security systems and entry controls, may interfere. This is
normal and does not affect the general performance of this product. The transmission will resume once the interference
recedes.
Important: Though the remote sensor is weather resistant, it should be placed away from direct sunlight, rain, snow and
should never be submerged in water.
PRECAUTIONS
1. The base unit is intended for indoor use only. It is not sealed against moisture and could be damaged if used outdoors.
The remote sensor is weather-resistant but not weather-proof or waterproof. Do not immerse it in water or allow snow to
accumulate on it. Do not leave it outdoors in extreme weather conditions. If these conditions become likely to occur,
temporarily move the sensor to an indoor area. Otherwise, permanent damage to the sensor's internal circuits may occur.
2. Do not immerse the units in water. If you spill liquid on one, dry immediately with a soft, lint-free cloth.
3. Do not clean the units with abrasive or corrosive materials. This may scratch plastic parts and corrode electronic
circuits.
4. Do not subject units to excessive force, shock, dust, temperature or humidity. This may result in malfunction, shorter
electronic life span, damaged batteries or distorted parts.
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