Time:2026-10-08 Browse: 12
Remote storage tanks — at farms, construction sites, rural water stations, and oilfields — sit far from power and WiFi. Running a cable or a cellular router to each one is expensive. A 4G solar radar level transmitter removes both problems: a small solar panel keeps it alive, and the 4G modem reports level to the cloud on its own.
Verified numbers for the JJY-YLB4S-47 (source: our own product page
/4g-wireless-level-transmitter/, checked 2026-10-08): 15 Ah battery paired
with a 5 V / 10 W solar panel, measuring ±2 mm over a 40 m range, and
about 60 days of operation with no sunlight at all. Housing is IP68,
rated −40 °C to 75 °C.
Three constraints kill most monitoring setups in the field:
A radar sensor measures without touching the liquid, so there is no float to jam or probe to corrode — a good fit when you cannot send a technician monthly.
1. The 80GHz radar module measures distance to the liquid surface. 2. A low-power MCU averages readings and stores them locally. 3. On a scheduled wake cycle, the 4G modem pushes the value to a cloud endpoint over MQTT / HTTPS. 4. The cloud dashboard shows level, trend, and low-level alarms.
Because the modem sleeps between sends, a modest solar panel and a small battery cover the duty cycle: the upload interval is configurable from 5 minutes to 2 hours, so you trade reporting frequency against battery life per site.
| Option | Needs power? | Needs site LAN? | Range |
|---|---|---|---|
| WiFi sensor | Yes | Yes | ~50 m |
| LoRa gateway | Yes (gateway) | No | km (line of sight) |
| 4G solar | No | No | cellular coverage |
If your tank is inside cellular coverage but outside WiFi, 4G is the shortest path to “see the level from your phone.”
Q: Will it work where there is no sun for a week? A: Yes. The 15 Ah battery powers the JJY-YLB4S-47 for about 60 days with no solar input at all; choose the panel size to suit your latitude and winter daylight hours.
Q: Do I need my own SIM card? A: No. Each unit ships with a factory-configured global roaming SIM card covering 100+ countries/regions, including 2 years of free data — you do not need to supply your own. The exact LTE band list varies by regional version; contact us to confirm the bands supported in your target market.
Q: How is the data secured? A: TLS transport to the cloud endpoint; device authenticated per-install.
Draft prepared 2026-10-07. Long-tail target chosen to avoid head-term competition (“radar level transmitter”) where incumbent brands dominate. Finalize after F confirms search demand.
Copyright @ 2026 JiaJia Eye
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