Tank Liquid Level Indicator
The Tank Liquid Level Indicator is a wireless system that measures liquid depth in tanks from 0 to 15 meters and displays the level on a 10-element LCD bar graph. It records min and max levels, triggers high and low alarms, and alerts when the tank is empty. The system includes i

What This Model Is For
The Tank Liquid Level Indicator is a wireless system that measures liquid depth in tanks from 0 to 15 meters and displays the level on a 10-element LCD bar graph. It records min and max levels, triggers high and low alarms, and alerts when the tank is empty. The system includes indoor and outdoor temperature sensing, time alarm functionality, and operates over a 433MHz link with a 100-meter open-air range. The receiver runs on two AA batteries and the remote sensor on six AAA batteries, with a minimum battery life of 12 months on each unit.
- Measures liquid depth from 0 to 15 meters with 0.01m resolution and ±0.03m accuracy
- 10-element LCD bar graph gives immediate visual level status without needing to read numbers
- Min and max level recording helps track usage trends and predict refill timing
- High and low level alarms prevent overfilling or running dry
- Tank empty alert stops damage from dry running in pumps or heaters
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Where It Is Used
- Water storage tanks in remote farms where manual checks are impractical
- Industrial chemical storage where overfilling risks safety or environmental damage
- HVAC and boiler systems with expansion tanks needing level monitoring
- Cold chain storage where liquid levels in refrigerant tanks affect system performance
- Marine and boat tanks where fuel or water levels must be tracked without wiring
Who It Is For
- Industrial tank integrators needing a wireless level monitor for existing systems
- Distributors selling tank monitoring to agricultural or building services customers
- Equipment suppliers bundling level sensors with pumps or heaters
- Cold chain operators monitoring refrigerant or coolant levels in remote sites
- Marine and leisure equipment brands adding tank monitoring to onboard systems
Problems It Solves
- Tanks that overflow or run dry because manual checks are missed or delayed
- Systems that fail due to low liquid levels not being detected in time
- Lack of visual level feedback in remote or hard-to-reach tanks
- Wired sensors requiring trenching or conduit runs that increase cost and complexity
- No historical data on min and max levels, making refill planning guesswork
Technical Features
- Measures liquid depth from 0 to 15 meters with 0.01m resolution and ±0.03m accuracy
- 10-element LCD bar graph displays level with clear visual indication
- Records and displays min and max liquid levels for trend tracking
- High and low level alarms trigger when set thresholds are crossed
- Tank empty alert activates when the level drops below the minimum detectable point
- Indoor temperature sensing from 0 to 60 degrees C
- Outdoor temperature sensing from -40 to 60 degrees C
- Time alarm function for scheduled monitoring or reminders
- Free standing or wall mounting options for flexible installation
- 433MHz wireless transmission with 100m open area range and 30-second update on level change
Specifications
Values taken from our own product documentation. Anything we cannot verify is marked rather than estimated.
| Water Level Measure Range | 0 to 15 m |
|---|---|
| Resolution | 0.01 m |
| Accuracy | plus or minus 0.03 m |
| Transmission Frequency | 433 MHz |
| Transmission Range | 100 m open area, 300 feet |
| Transmission Interval | 30 s when level changes, 3 min when level stable |
| Indoor Temperature Range | 0 to 60 degrees C |
| Outdoor Temperature Range | -40 to 60 degrees C |
| Temperature Accuracy | plus or minus 1 degree C |
| Receiver Power | 2 x AA 1.5V LR3 alkaline batteries |
| Transmitter Power | 6 x AAA 1.5V LR6 alkaline or lithium batteries |
| Receiver Battery Life | Minimum 12 months |
| Transmitter Battery Life | Minimum 12 months |
| Receiver Dimensions | 108 x 94 x 27 mm |
| Transmitter Dimensions | 97 x 68 x 152 mm |
| LCD Dimensions | 66 x 45 mm (3.3 inch) |
Materials and Construction
- Moulded plastic housing for the receiver and transmitter
- Weather sealed outdoor enclosure for the transmitter
- Battery compartment sized for 6 x AAA cells in the transmitter
How It Is Made
Sensor and receiver sub-assemblies are populated and soldered on our own assembly line
Housings are sealed and checked on rainfall and waterproof test equipment
Every unit is ageing tested before it leaves the factory
Quality Control
- Rainfall and waterproof testing on the assembled transmitter
- Constant temperature and humidity chamber runs covering the -40 to +60 degrees C outdoor claim
- Vibration testing to reproduce transport and site loading
- Smog ageing to check the housing and seals
- Final ageing test on every unit before packing
Customisation Options
- Own-label printing and retail packaging
- Console pairing to a customer's existing UCTECH-protocol display
- Alternative battery configurations on request
- Manual and quick start guide in the destination language
Compared With the Alternatives
vs Wired level sensors with analog output
No trenching or conduit needed; installation is faster and cheaper, but requires battery changes
vs LoRa-based level sensors
433MHz is simpler and lower cost for single-site monitoring; LoRa is better for large sites with multiple sensors
vs Manual dip-stick or visual gauge
Automated data collection avoids human error and allows remote monitoring, but requires power and electronics
Use Guide
- Mount the transmitter securely inside the tank with the sensor facing down
- Ensure the transmitter is fully submerged during operation to measure liquid depth
- Install the receiver in a location with clear line of sight to the transmitter
- Pair the receiver and transmitter before first use to establish the wireless link
- Check battery levels at least once per year and replace when low
Tank Liquid Level Indicator Questions
What is the real range between the transmitter and receiver
100 meters in open air. Through walls, metal, or dense material, expect around 30 meters, which covers most indoor and outdoor tank setups.
How often does it update the level
Every 30 seconds when the level changes. If the level is stable, it updates every 3 minutes to save battery.
Can the sensor work in freezing temperatures
Yes. The outdoor temperature range is -40 to +60 degrees C. Use lithium batteries in sub-zero conditions for best performance.
Does it work with a console we already sell
If that console uses the UCTECH 433MHz protocol, yes. Send us the model and we will confirm before you order.
What is the lead time and minimum order
Tell us the quantity and target ship date and we will confirm both by email. Lead time depends on whether own-label printing and packaging are involved.
Which certifications does it carry
TBC. Ask us for the current certificate set for your destination market before you place the order.
Read Next
Request a Quote for the Tank Liquid Level Indicator
Tell us the quantity, the destination market and whether you need own-label printing. We will confirm pricing, pairing and lead time in writing.
