User's Manual

Control Device: The reading from this device will not issue any alarm but control the
operation of the switches those have been assigned by this device.
High Limit Operation: Turn on at high limit reading and turn off at low limit reading.
Low Limit Operation: Turn on at low limit reading and turn off at high limit reading.
High Limit Operation Device Low Limit Operation Device
(SW ON) (SW OFF)
(High Limit)+1
(High Limit)
(Low limit)
(Low Limit)-1
(SW OFF) (SW ON)
High Limit Operation Device Low Limit Operation Device
F. SPECIFICATIONS
Supervision: sends temperature/ analog reading at 30-minute interval alternatively.
Power Source: two AAA alkaline batteries.
Working Temperature Range: -20℃ to 50℃ (over this range the working of the device
is not guaranteed)
Reading Update Speed: 30-seconds/ Reading.
Temperature Sensor Operation Range: -40℃/85℃.
Temperature Accuracy: 10℃ to 40℃ +/- 1℃ max.
-40℃ to 85℃ +/- 3℃ max.
Analog Reading (MA=02): 0-200 for 0~20mA or 0~1.952V (9.76mV/step) +/-0.5%.
Max. Input Current/Voltage: 100mA or 10V (0-2V input impedance=100KΩ)
Low Battery Detection: 2.6V+/- 0.1V.
Current Drain: 5uA @ standby, 20mA @ RF operation
Estimated Battery Life: Sending 60,000 readings or 3 years (Temperature/Analog readings
vary 25 times/day each)
Dimension/weight: 20 x 29 x 123.5 mm, about 34g (w/o battery):
Appendix:
Interface circuits for 0-20mA and 0-2V.
User can change the value of R14, R15 and R16 to meet their specific sensor output.