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Home »  Wireless Level Monitor Buying Guide: 7 Key Questions to Make the Right Choice

 Wireless Level Monitor Buying Guide: 7 Key Questions to Make the Right Choice

May 7, 2026

Target Audience: Procurement Managers, Engineering Technicians, Home Users

Question 1: What is your installation scenario?

Selection Advice: Rooftop tanks (outdoor, no power) need solar power solutions; indoor fire tanks with power can use mains power; deep wells/underground require IP68 protection.

▶ HojellyTek solar+battery solution perfectly adapts to outdoor no-power scenarios.

Question 2: Which measurement principle should you choose?

Selection Advice: Non-contact (ultrasonic/radar) is superior to contact (submersible/float). Contact sensors are prone to scaling and jamming; non-contact never contacts liquid – maintenance-free.

▶ HojellyTek uses ultrasonic non-contact measurement – never clogs, maintenance-free.

Question 3: How to solve power supply?

Selection Advice: Priority order is Solar > Mains > Pure Battery. Pure battery requires frequent changes; mains needs wiring and fails during outages; solar offers flexible deployment and long-term maintenance-free operation.

▶ HojellyTek solar+battery solution – installation location unlimited, automatic charging during daylight.

Question 4: How to choose signal transmission?

Selection Advice: If installation location has good WiFi signal, WiFi is low-cost and easy to deploy. If signal is poor, consider LoRa or separate sensor/main unit design.

▶ HojellyTek uses separate sensor and main unit design – position main unit where signal is strongest.

Question 5: Is the protection rating sufficient?

Selection Advice: Outdoor installation needs at least IP65; possible submersion requires IP67/IP68.

▶ HojellyTek main unit and sensor are both IP67 rated – completely dustproof, can be temporarily submerged.

Question 6: Is the alert mechanism comprehensive?

Selection Advice: App-only push notifications may be blocked by Do Not Disturb mode. Choose products supporting multi-channel alerts.

▶ HojellyTek supports App push, SMS, voice call alerts via Tuya platform.

Question 7: What is the Total Cost of Ownership (TCO)?

Selection Advice: Don't just look at device price – calculate 3-5 year total cost including device + installation + maintenance + potential losses.

▶ HojellyTek may have slightly higher initial price than pure battery products, but no wiring, no maintenance, and high reliability make long-term TCO optimal.

How to verify product reliability?

  • Read real user reviews, especially long-term feedback
  • Confirm CE, RoHS certifications
  • Check if separated design solves signal issues
  • Verify App ecosystem supports multi-user and multi-device management
  • Ensure protection rating meets installation environment requirements
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