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Features
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Applications
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Specifications
HojellyTek CESS-ULS-03GP Ultrasonic Level Sensor, Split LoRa WiFi Smart Tank Level Detector
Our level ultrasonic sensor solves traditional monitoring pain points! Split sensor & gateway design, 1-2km long-distance LoRa transmission, ultra-low power battery supply, remote tank liquid level viewing & alarm via Smart Life APP.
Features
This level ultrasonic sensor adopts hybrid LoRa+2.4G WiFi dual wireless transmission. It supports 0.1–3m high-precision liquid level measurement, customized high/low level alarm and historical data curve recording. One phone can monitor multiple tanks simultaneously, ideal for farm, industrial and remote storage scenarios.
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Split Dual Communication Level Ultrasonic Sensor
Separated sensor and gateway structure, built-in LoRa frequency hopping anti-interference technology; 1–2km long stable transmission in open areas, only 5% packet loss rate, perfectly fix the short transmission distance & short battery life defects of single WiFi sensors.
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9000mAh Large Capacity Ultra-Low Power Design
The ultrasonic sensor is equipped with 3×18650 rechargeable batteries, working current less than 30mA. No frequent charging required, effectively cut later operation and maintenance costs; wide working temperature from -20℃ to 70℃ for all-weather outdoor use.
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High Precision IP67 Waterproof Ultrasonic Probe
Measuring range 0.1–3m, measurement tolerance ±(1%Reading+10mm), blind zone below 10cm. IP67 waterproof grade, can be mounted on top of all kinds of outdoor storage tanks without extra protective housing.
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Tuya Smart APP Full Remote Monitoring Function
LoRa gateway with LCD screen to display real-time liquid level data locally; connect to Smart Life/Tuya APP via 2.4GHz WiFi. Custom high/low liquid level threshold, automatic phone notification alerts, check liquid depth, percentage and historical trend curves anytime with mobile data.
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One-to-Many Multi-Tank Centralized Management
A single mobile phone can pair multiple level ultrasonic sensors at the same time, realize unified monitoring of dozens of water tanks, oil tanks and silos for farms, factories and oil depots.
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Simple Wiring-Free Installation & One-Click Configuration
Clear indicator light prompts for LoRa pairing and WiFi network matching; no complex wiring needed, easy top-mounted installation. Set tank capacity, installation height and blind zone on APP, save all parameters with one click.
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Suitable for Complex Hard-Condition Sites
Stable operation in remote areas lacking power supply or WiFi signals, widely applicable to farm irrigation tanks, remote water storage facilities, oil depots, grain silos and industrial liquid storage containers.
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| Parameter | Description |
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| Measurement Principle | Ultrasonic, non‑contact |
| Detection Range | 0.1 – 3 m (3.9 – 118 in) |
| Accuracy | ±1% of measured distance |
| Blind Zone | 0.1 m (4 in) – no reading in this area |
| Sensor – Wireless | LoRa (license‑free band) |
| LoRa Range | Up to 1‑2 km (open field); 200‑500 m with obstacles |
| Sensor – Battery | 9000mAh rechargeable Li‑ion (built‑in) |
| Battery Life | Up to 8 months on a full charge |
| Charging Input | 5V / 1A – 2A (standard USB charger) |
| Gateway – Connectivity | 2.4GHz WiFi (802.11 b/g/n) + LoRa |
| Gateway – Power | 5V USB adapter (included) |
| Operating Temperature | Sensor: -20°C ~ 70°C (-4°F ~ 158°F) Gateway: 0°C ~ 40°C (32°F ~ 104°F) |
