Indoor：-10℃～+50℃ (+14℉ ～ +122℉)
Outdoor: -50℃～+70℃ (-58℉ ～ +158℉) （If the meter have an outdoor temperature sensor.）
Humidity Range: indoor 20% ~ 99% RH（When the humidity < 20%RH, display 10%RH directly.）
1) Open battery compartment cover, take out the polarity insulator, put on the cover, then the meter starts to work.
2) BUTTON function:
[MODE] exchange display mode of CLOCK and ALARM, set current time, alarm, 12h/24h display and date.
[ADJ] adjust the value of what is under setting.
[℃/℉] change temperature unit between Celsius (℃) and Fahrenheit (℉) .
[RESET] delete all values set and in memory, all values return to the original.
[MEMORY] press to display memorized MAX and MIN values of temperature and humidity.
3) In status of original, press and hold [MODE] for 2 seconds, the minute value flashes, press [ADJ] to adjust value of minute, press [MODE] continuously, can adjust value of hour, 12h/24h, date(D), month(M) respectively.
4) Under mode of clock, ‘:’ between hour value and minute value flashes every second, press [MODE] one time, change CLOCK mode to ALARM mode, then ‘:’ between hour value and minute value does not flash, now, press [ADJ] button, can switch ON/OFF of ALARM function and Hourly alarm ( ) function. Press and hold [MODE] for 2 seconds to set up ALARM time.
5) Under mode of ALARM, the meter will return to CLOCK mode if there is no any operation in 1 minute. Press [MODE] one time, change the display to date and the meter return to CLOCK mode automatically in 3 seconds.
1) Press [RESET] button for one time when the meter is first used or the battery is replaced.
2) Press [RESET] button for one time if any abnormal display appears.
Economical way to monitor indoor temperature and humidity,Temperature unit C/F changeable
Memory of MAX/MIN values of temperature & humidity, Temperature range: IN side temperature: -10~+50C (+14~+122F), OUT side temperature: -50~+70C (-58~+158F), humidity range: 20%~99%RH. Power-supply: 1.5V (AAA size) x 1
Display indoor/ outdoor temperature display, indoor humidity, Power-supply: 1.5V (AAA size) x 1(Included), Hourly alarm function, Everyday alarm function
Display temperature and humidity simultaneously, desk-top placing or Wall Hanging
Push ‘IN-OUT’ button to select to show INSIDE or OUTSIDE temperature (IN or OUT will be indicated on LCD screen).