Water, fuel, chemicals and slurry all have one thing in common: if you cannot measure the level, you cannot control the process. In fire networks, water supply, tank farms and HVAC loops, one inaccurate reading means a dry pump, an overflow or a false alarm at 3 a.m. The TOPRIE TP2403 wireless level transmitter was engineered to solve exactly this problem — a battery-powered, IP66/IP68 hydrostatic level sensor that puts reliable liquid level data on your platform or mobile app without a single metre of signal cable.

The TP2403 is a smart wireless level pressure transmitter that converts hydrostatic head pressure into a precise liquid depth reading and transmits it over 4G, WIFI,NB-IoT, LoRa, LoRaWAN. It supports USB-C and Bluetooth configuration, data export in PDF and CSV format, high/low limit alarms with immediate reporting, and on-site sensor value correction. In short: a submersible level probe, a data logger and an IoT gateway in one stainless-steel housing.

• 0.5% F.S. accuracy across a 0–5 m range, with 0–100 m optional. Hydrostatic sensing stays linear and repeatable, so a 100 m reservoir is measured with the same confidence as a 2 m sump.
• Up to 5 years of battery life. The 17,000 mAh non-rechargeable lithium pack keeps a LoRa/LoRaWAN unit running 4–5 years at hourly uploads, and 2–2.5 years on 4G or WiFi — no trenching, no power runs, no electrician on the tank top.
• IP66/IP68 protection and SS304 / aluminium alloy construction. Salt spray, condensate, washdown and outdoor UV are normal operating conditions, not exceptions.
• Breakpoint data transmission. When the network drops, readings are cached locally and back-filled to the server once the link returns — the trend curve never shows a hole.
• Open protocols: MQTT, TCP/IP and private protocol. Data lands in your own SCADA, ERP or cloud dashboard instead of a locked vendor portal.
• Zero civil works. Mount vertically or horizontally with NPT1/2, M20*1.5 or BSP1/2 threads, wake it with a button press, and it is online in minutes.

Fire water systems and fire protection networks. Fire codes require the fire water tank to hold its design reserve at all times. The TP2403 reports hourly and pushes an alarm the instant the level crosses the low-limit threshold — long before a pump runs dry.

Municipal water supply and drainage networks. Deployed across manholes, wet wells and boosting stations, the wireless design removes power and cabling at hundreds of scattered points. Managers get one dashboard of reservoir and sump levels, plus early warning of overflow after heavy rain.

Oil reservoirs, fuel tanks and petrochemical tank farms. With 0.5% F.S. accuracy and a submersible SS304 probe, the TP2403 delivers dependable inventory readings for diesel, fuel oil and light chemicals. Deep tanks use the 0–100 m optional range, and explosion-proof variants of the same platform (TP2403-Ex, TP2403Vx.5-Ex) cover hazardous areas in the same footprint.

HVAC cooling water and chiller loops. Level and temperature travel in one upload, so facility teams can correlate make-up water use with thermal load and catch leaks at night, when nobody walks the plant room.

Deep wells, reservoirs and flood-warning points. The 0–100 m optional range lets the same transmitter serve deep boreholes and mountain reservoirs, anywhere a level must be collected, timestamped and trended without wiring.

TOPRIE has manufactured IIoT instrumentation in Shenzhen since 2009, with 40–50% of output exported and CE / RoHS certification across the level transmitter range. Buyers get OEM branding, a one-piece minimum order, 100-piece-per-day supply, and one platform that scales from a 2 m sump to a 100 m reservoir by changing only the range and radio option — one spare-parts list and one protocol for the whole project.

Ready to specify? Tell us your medium, range, mounting thread and preferred network, and we will confirm the exact TP2403 configuration and quote within one working day.