Wireless Water Tank Liquid Level Meter

We are offering wireless water tank liquid level meter,
feature:
1. Monitors tank liquid depth level
2. Tank liquid level displayed on a 10-element lcd bar graph
3. Minmax records of tank liquid level
4. Tank liquid level highlow 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.