Battery-Powered Wireless IoT Level Transmitter | SLS3220
A next-generation industrial wireless hydrostatic level transmitter engineered for seamless remote monitoring networks without single-point field wiring.
The SLS3220 is a premier wireless level tracking solution, powered by a massive 40,000mAh replaceable lithium battery that delivers an exceptional 3-to-5-year operational lifespan. Designed with an ultra-low power standby current of just 10µA, it natively supports modern global IoT frameworks including NB-IoT, LoRaWAN, 4G LTE, and Bluetooth 5.0. Housed in a robust IP67 weatherproof terminal head paired with a fully submersible IP68 sensor probe, it offers smart remote parameter configuration and internal data logging to completely secure your data against field network outages.
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Wireless Ecosystem Integration: Natively transmits via NB-IoT, LoRaWAN, 4G, ZigBee, and Bluetooth with MQTT/CoAP protocols.
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Extended Field Lifespan: High-capacity 40,000mAh internal battery combined with smart power management yields 3–5 years of continuous service.
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Data Loss Safeguard: Built-in internal data storage automatically logs measurements during temporary network outages.
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Maintenance-Free Enclosure: Features an external magnetic switch design to perform routine configuration tasks without ever opening the terminal housing.
Description
True Wireless Independence for Scalable IoT Networks
Running power lines and signal cables to remote water storage facilities, river monitoring outposts, or vast industrial tank farms is heavily cost-prohibitive. The SLS3220 completely eliminates field wiring by unifying a highly sensitive diffused silicon pressure sensor with a micro-power wireless telemetry unit. Operators can configure reporting intervals anywhere from 60 seconds up to 24 hours via Bluetooth 5.0 or directly through cloud commands, allowing you to tailor the system to your precise network infrastructure.
Fail-Safe Data Retention and Low-Power Engineering
Unlike legacy wireless sensors that drop critical process values during connection dropouts, the SLS3220 features intelligent onboarding memory to safeguard your logs. In the event of a cellular or LoRa network outage, the device securely caches your level parameters and uploads the historical buffer as soon as service is restored. Furthermore, its advanced bridge-type signal conditioning hardware keeps standby power consumption at a minimal 10µA, ensuring the field battery outlasts traditional instrumentation frameworks.
Features
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Zero Field Wiring Overhead: Eliminates traditional trenching, conduit runs, and external junction box costs.
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Bluetooth 5.0 Connectivity: Enables swift localized diagnostic expansion and configuration tuning directly from a mobile device.
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Full-Temperature Compensation: Precision internal factory calibration keeps measurement drift locked at ±0.3% FS/year across a broad environmental spectrum.
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Industrial Resiliency Core: Confirmed CE compliance with heavy industrial EMC, electrostatic discharge (ESD), and surge protection standards.
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Accessible Component Swap: Smooth field accessibility ensures simple, rapid battery replacements at the end of its 5-year cycle.
Specification
| Parameter | Technical Specification |
| Measurement Range |
0–0.5 m up to 300 mH2O standard configurations |
| Power Supply Baseline |
3.6 VDC High-Capacity Lithium Battery (40,000 mAh) |
| Battery Service Life |
3 to 5 Years typical operational window (Easy-replacement design) |
| Standby Current Draw |
10µA base standby mode / 30µA when local LCD is active |
| System Accuracy Options |
Selectable accuracy tiers: ±0.5%, ±0.2%, ±0.1%, or ±0.075% FS |
| Wireless Protocols |
MQTT / CoAP / LoRaWAN / CLAA / IEEE 802.15.4 / Bluetooth 5.0 |
| Cellular / Radio bands |
NB-IoT / LoRa / 4G LTE Netcom / ZigBee |
| Reporting Intervals |
60 seconds base interval (Fully customizable via remote link) |
| Ingress Sealing Class |
Submersible Sensor Head: IP68 / Surface Battery Housing: IP67 |
| Internal Data Caching |
Automated data storage function during active network dropouts |
| Hardware Operations |
Integrated magnetic switch for routine tasks without housing exposure |
FAQ
Q: How does the internal storage work if the wireless network drops out?
A: The SLS3220 features an automated data storage backup module. If your LoRaWAN gateway or 4G tower goes offline, the sensor continues to sample levels on schedule and safely saves the records internally. Once connection integrity returns, the device transmits the stored data block seamlessly to prevent data gaps.
Q: Do I need to open the housing cover to wake up or check the device status?
A: No. The SLS3220 is designed with a specialized external magnetic switch layout. This allows field technicians to wake the device, cycle functions, or trigger routine baseline tasks using an external magnetic key without exposing the dry electronics terminal to harsh outdoor humidity or rain.
Q: What type of fluids can this wireless sensor monitor safely?
A: The standard wetted probe body is constructed from high-grade stainless steel, making it perfectly compatible with water, oils, fuels, and a wide variety of non-corrosive industrial process fluids.
