Feature:
1. Monitors tank liquid depth level
2. Tank liquid level displayed on a 10-element LCD bar graph
3. Min/max records of tank liquid level
4. Tank liquid level high/low alarm
5. Tank liquid empty alert
6. Indoor temperature (ºF or ºC)
7. Tank temperature (ºF or ºC)
8. Time alarm
9.  Free Standing or wall hanging
Specification:
Indoor temperature range :0~60ºC
Outdoor temperature range:-40~60ºC
Temperature accuracy:±1ºC
Water level measure rang:0 ~15m
            Resolution:0.01m
            Accurate: 0.03M
Transmission frequency:433MHZ
Transmission range:100 meters(300 feet)in open area
Transmission interval: 30s when level changes or 3 minutes when level does not change
Power consumption:
Receiver:2XAA 1.5V LR3 Alkaline batteries
Remote sensor:6XAAA 1.5V LR6 Alkaline or lithium batteries 
Battery life:   Minimum 24 months for receiver
             Minimum 24 months for transmitter
Dimensions(HXWXD):
Receiver:108X94X27mm
Transmitter:97X68X152mm
LCD Dimensions(LXW):66X45mm(3.3 inch)