the valid signal of the same ID Code within 60 minutes, the CH temperature will
display "-- .-"
When the temperature is lost, the signal is received again and the temperature
display will be restored
(3) Alarm function:
The alarm time lasts for 2 minutes;
When the alarm is sounding, single press [SNOOZE/LIGHT] key to delay the
alarm for 5 minutes, press other keys to exit the alarm;
The maximum number of alarms is 5;
(4) Temperature function:
Indoor temperature range: -9.9℃ ～ 50℃ (14.2℉ ～ 122℉); higher than 50℃
shows HH.H, lower than -9.9℃ shows LL.L;
Outdoor temperature range: -40℃ ～ 70℃ (-40℉ ～ 158℉); higher than
70℃ shows HH.H, lower than -40℃ shows LL.L;
Indoor and outdoor environmental humidity range: 20-99%; higher than 99%
shows HH, lower than 20% shows LL;
Indoor temperature detection cycle: 30 seconds;
Outdoor temperature and humidity:
a) CHANNEL 1 periodically transmits 93S once;
b) CHANNEL 2 is periodically transmitted once at 97S;
c) CHANNEL 3 is launched once every 101s;
d) Temperature and humidity maximum/minimum memory function, long press
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