Radiance Instruments 820T Wireless Fridge Thermometer User Manual
Radiance Instruments Ltd. Wireless Fridge Thermometer
USER MANUAL
Radiance instruments Ltd.
Da Jing Village, Si Jiao Lou,Luo Yang Town,Hui Zhou City,China Postcode: 516171
Phone: 0752-6831106/6831108（126） Fax: 0752- 6832319 E-mail:wubz@liheng.net
PRODUCT USER MANUAL
Product number：RT820RF Product name: Wireless fridge thermometer version: V1.1
Feature:
2.4GHZ wireless fridge thermometer。
IP65 waterproof for transmitter.
HIGH/LOW alarm setting.
Maximum temperature and current temperature reading.
FCC,CE, NSF and ROHS compliant.
Low battery indication.
C / F exchange
Magnetic attachment
Specification:
Measuring range
-25 ~ 50C/-13 ~ 122 F
Temperature accuracy
±0.5℃/0.9℉
Display resolution
0.1
Temperature reading update
10 seconds alarm active，30 seconds normal
Transmitter battery life
About 6000 hours
Receiver battery life
About 4000 hours(no alarm)
Working temperature
25 ~ 50 C for transmitter, 0 ~ 50 C for receiver
Wireless distance
50 meters (open field, about 10 meters into the fridge)
Receiver size
65(W) x 97(H) x 20(D) mm
Transmitter size
110(L) x 35(D) x 30(Ф) mm
Receiver display size
37(W) x 37(H) mm
Transmitter battery
3 volt battery, type AAA X 2 or equivalent
Receiver battery
3 volt battery, type AAA X 2 or equivalent
Operation
Put the transmitter into the fridge and put the receiver outside the fridge.
C / F exchange
Select the temperature unit C or F by the switch on the back side.
Receiver
1） Press [ ] button to turn on the unit, press the button and hold for 3 seconds to turn off.
2） After about 10 seconds, the receiver will receive the signal from the transmitter and display the
temperature. The reading will be update 10 seconds.
Transmitter
1) Press[ ] button to turn on the unit, red LED flash 5 times, press and hold for 3 seconds to turn off the unit,
red LED flash 2 times.
2) In normal working, it will send out the signal each 30 seconds and the LED flash.
Alarm setting
1) Press [ ] button to turn on or off the alarm monitor.
2) Press [Set] button and hold 5 seconds to enter the low temperature alarm setting mode, the value flash. Press
[▲] or [▼] to set the low alarm value. After finish the low alarm setting, press [Set] button once again to enter
the high temperature alarm setting mode, set the value as above. Press the [Set] button to finish alarm
setting .
3) When the current temperature lower or higher the limited, the alarm sound active and LED flash. Press any
key to silent, but the LED flash continue, until the temperature come back to the safe rang.
When the alarm sound active 60 seconds continue, the sound will be silent 30 seconds and sound “bi、bi”。
Maximum temperature clear
1) Press[▲] and [▼] buttons for 3 seconds to clear the maximum temperature.
Code rematch
1） The transmitter has paired with the receiver before delivery. If you want to rematch the unit code, turn off
the receiver at first, then press and hold [ ] button for 5 seconds to enter the code rematch mode.
“Sync” icon display。
2） Turn off the transmitter at first，then press and hold [ ] button for 5 seconds to enter the code rematch
mode。
3） The unit will be store the code automatically and then return to the normal working mode。
ERROR SYMBOLS:
Symbol
Description
Action required
Transmitter low battery voltage
Replace the battery with the same type
Receiver low battery voltage
Replace the battery with the same type
LLL.L
1) Sensor open circuit
2) The reading is out of low range (-50C/-58F)
1) Return the thermometer for repair
2) Keep the measurement above low range
HHH.H
1) Sensor short circuit
2) The reading is out of high range (70C/158F)
1) Return the thermometer for repair
2) Keep the measurement below high range
Sync
Code rematch
This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions:
(1) this device may not cause harmful interference, and (2) this device must accept any interference received,
including interference that may cause undesired operation.
This equipment complies with the FCC RF radiation exposure limits set forth for an uncontrolled environment.
This equipment should be installed and operated with a minimum distance of 20 centimeters between the radiator
and your body. This device complies with Industry Canada Licence-exempt RSSs. Operation is subject to the
following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any
interference, including interference that m
ay cause undesired operation of the device. Le présent appareil est conforme aux CNR d’Industrie Canada
applicable aux appareils radio exempts de licence. L’exploitation est autorisée aux deux conditions suivantes : (1)
l’appareil ne doit pas produire de brouillage, et (2) l’utilisateur de l’appareil doit accepter tout brouillage
radioélectrique subi, même si le brouillage est susceptible d’en compromettre le fonctionnement.
Changes or Modifications not expressly approved by the party responsible could void the user’s authority to
operate this device.
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part
15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a
residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not
installed and used in accordance with the instructions, may cause harmful interference to radio communications.
However, there is no guarantee that interference will not occur in a particular installation.
If this equipment does cause harmful interference to radio or television reception, which can be determined by
turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the
following measures:
-- Reorient or relocate the receiving antenna.
-- Increase the separation between the equipment and receiver.
-- Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
-- Consult the dealer or an experienced radio/TV technician for help.
TRANSMITTER FCC ID: 2AI67-
820
T / IC: 22116-820T
Mark Wu
2018-AUG-17