Basement utility pits and underground meter vaults are notoriously hostile to standard Wi-Fi. This guide compares the two wireless alternatives available on the NeoEyes NE101 — LTE Cat.1 and Wi-Fi HaLow (802.11ah) — across the dimensions that actually matter for field deployment: signal penetration, power draw, SIM costs, and infrastructure requirements. Includes a decision matrix and step-by-step configuration walkthrough.
Standard 2.4 GHz Wi-Fi loses roughly 20–30 dB of signal strength passing through a single reinforced concrete floor — enough to drop a usable –60 dBm signal to below the –90 dBm noise floor. Add a cast-iron pit cover, a steel meter cabinet, and 0.5–1.5 m of earth fill, and you’re dealing with combined attenuation that makes 2.4 GHz Wi-Fi functionally unusable in the majority of underground meter installations.
This isn’t an edge case. A significant share of commercial water and gas metering infrastructure — sub-metering in basements, district heating meters in plant rooms, industrial flow meters in concrete trenches — sits in exactly this environment. The two connectivity options that physically work here are cellular (4G LTE Cat.1) and sub-GHz Wi-Fi (Wi-Fi HaLow, 802.11ah). Both are available as plug-in communication modules for the NeoEyes NE101 camera. Which one you pick has real consequences for power consumption, recurring cost, and infrastructure complexity.
This guide covers the NE101 as the image capture node. OCR digit recognition runs separately — either on a local NeoEdge NG4500 gateway (Path B) or on the NeoEyes NE301 on-device NPU (Path A). For the complete system architecture and OCR path selection, see the IoT Camera Meter Reading guide.
Both modules slot into the same physical header on the NE101 mainboard — no soldering, no firmware changes, driver-free recognition on insertion. Swapping protocols in the field means opening the enclosure, removing screws, and exchanging the module. That’s the hardware reality to keep in mind when reading the comparison below.
The LTE Cat.1 module uses a Quectel EG912 Series chipset. It supports LTE FDD/TDD and GSM fallback. Two regional variants are available: global version (NE101-L01GL) for Europe, Asia, South America, and Oceania, and North America version (NE101-L01NA) for NA markets. Same 60 mm × 60 mm form factor. Requires a nano-SIM card inserted into the slot behind the front cover.
The Wi-Fi HaLow module uses a Quectel FGH100M chipset, compliant with IEEE 802.11ah. It operates in the sub-GHz ISM band: 868 MHz for Europe, 915 MHz for North America. Same 60 mm × 60 mm form factor. No SIM card — it connects to a private Wi-Fi HaLow access point (AP) on your local network. Two SKUs are available: 868 MHz and 915 MHz.
The table below covers the dimensions that matter most for underground meter deployments. “Winner” calls are contextual — there is no universally superior option; the right choice depends on your specific constraints.
| Dimension | LTE Cat.1 | Wi-Fi HaLow (802.11ah) |
|---|---|---|
| Signal penetration | Excellent through concrete/earth — uses existing cellular tower infrastructure. Underground pits with any cellular coverage will connect. | Sub-GHz penetrates concrete significantly better than 2.4 GHz. Typical 15–25 dB advantage over standard Wi-Fi. Still limited by deep basements with no LOS to AP. |
| Effective range | Determined by nearest cell tower — typically 100m–2km outdoors, 30–200m indoors/underground with adequate signal. | Up to ~1 km outdoor LOS. Indoor/underground range highly site-dependent — typically 50–300 m through moderate obstruction. |
| Power draw (active TX) | Higher peak current during LTE transmission (~150–400 mA TX burst). Significant factor for battery life at high capture frequency. | Lower average current than LTE in most deployments. Sub-GHz TX is more efficient at short to medium range. |
| Power draw (deep sleep) | Both paths: NE101 deep sleep ≤1 W — power mode is device-level, not module-level. Sleep current dominated by ESP32-S3, not the radio. | |
| Recurring cost | SIM data plan required. Typical IoT SIM: $0.50–$5/device/month depending on region and data volume. At 1000 units: $500–$5,000/month ongoing. | No recurring cost. Private network — one-time AP hardware investment only. |
| Infrastructure required | None on your side — cellular tower coverage already exists. SIM procurement and APN configuration only. | Requires a Wi-Fi HaLow AP per coverage zone. AP hardware cost typically $150–$500. Must be installed with power and backhaul. |
| Data privacy | Images transit cellular network and operator infrastructure. For sensitive industrial data, end-to-end encryption (MQTTS) is essential. | Traffic stays on private network. Never leaves premises. Simpler compliance posture for GDPR and industrial data regulations. |
| Configuration | Set APN, username, password via Web UI. Region-specific SIM matching required. Cat.1 configuration takes ~5 minutes in the NE101 Web UI. | Scan for HaLow SSID in Web UI, select region (EU/NA), connect. No APN configuration. Slightly simpler setup when AP is already deployed. |
| Works without local infrastructure | Yes — works anywhere with cellular coverage, including remote sites with no buildings or private network nearby. | No — requires a local HaLow AP within range. Remote/isolated sites are not viable without deploying AP infrastructure. |
| Deployment scale economics | Cost-effective at low count. Becomes expensive at scale due to recurring SIM costs. 100 units × $2/mo = $2,400/yr ongoing. | Cost-effective at scale. One AP can serve 50–100+ NE101 units. Per-unit recurring cost is zero beyond amortized AP hardware. |
| Typical use case fit | Remote rural meters, outdoor utility cabinets, geographically dispersed sites, sites with no local infrastructure. | Dense urban sub-meter deployments, building basement meters, campus utility networks, 50+ units on one site. |
| Source: CamThink product specifications and field deployment data. LTE costs are estimates; actual SIM pricing varies by carrier and region. | ||
The NE101 ships with Wi-Fi standard. Both LTE Cat.1 and Wi-Fi HaLow are plug-in modules — order the version that matches your deployment or buy modules separately.
The two questions that determine the right choice in almost every deployment:
(1) Is there cellular coverage at the installation site?
(2) How many meters are on the same site?
At $2/unit/month SIM cost, 50 units costs $1,200/year in data recurring. A single HaLow AP capable of serving those 50 units costs roughly $200–$400 one-time. The crossover point where HaLow becomes cheaper than LTE is typically 15–25 units over a 12-month horizon, depending on SIM pricing in your region.
Both modules are configured via the NE101’s built-in Web UI. After installing the module and powering
on, access the Web UI at 192.168.1.1 by connecting to the NE101’s Wi-Fi AP
(SSID: NE101_XXXXXX, no password).
Open the NE101 front cover with a Phillips screwdriver. Insert your nano SIM into the slot. Reinstall the cover.
Navigate to Internet Connection → Cat.1. You’ll see fields for APN, Username, Password, PIN Code, Authentication Type, and AT Commands.
Enter the APN provided by your carrier (e.g., internet, iot.1nce.net, or your private APN). Username and password may be blank for many IoT SIMs. Click Send to test.
Cellular Status changes to Connected when the link is live. Click Details to confirm signal strength and IP address. Click Save.
Navigate to Data Reporting. Set your MQTT broker host, port (default 1883, or 8883 for MQTTS), topic, and credentials. Enable SSL/TLS and upload CA certificate for encrypted transmission over cellular.
This section covers the quick-start configuration. For comprehensive deployment guidance — including AP selection, network topology planning, signal optimization, and troubleshooting — see the full Wi-Fi HaLow Solution Application Guide
Position the HaLow AP with clear line-of-sight to the meter area if possible. Connect it to your LAN with power. Note the AP SSID and credentials.
Navigate to Internet Connection → Wi-Fi HaLow. Select your region from the dropdown — Europe (868 MHz) or North America (915 MHz). This sets the frequency band automatically.
Click Refresh to scan available HaLow SSIDs. Select your AP SSID from the list and enter the password. The NE101 will connect and display signal strength (RSSI).
Same as LTE: set MQTT broker address on your local network, port, topic, and credentials. Since traffic stays on-premises, plain MQTT on 1883 is acceptable for closed networks; use MQTTS for any internet-facing broker.
Once connected — via either LTE or HaLow — the NE101 publishes an identical JSON payload after each capture event. The payload includes device identity, battery state, capture type, and the Base64-encoded JPEG image. Your OCR pipeline, SCADA system, or data broker subscribes to the configured topic and receives this message directly, with no intermediary cloud service required.
For detailed MQTT broker configuration, topic subscription, and data pipeline integration, see the complete MQTT Data Integration Guide in the Wiki documentation.
{
"ts": 1740640441620, // Unix timestamp, milliseconds
"values": {
"devName": "NE101 Sensing Camera",
"devMac": "D8:3B:DA:4E:10:88",
"devSn": "458658825555",
"hwVersion": "V1.0",
"fwVersion": "NE_101.1.0.3",
"battery": 84, // Remaining battery %
"batteryVoltage": 4200, // mV
"snapType": "Scheduled", // Button | Scheduled | PIR | Alarm
"localtime": "2026-04-22 08:30:00",
"imageSize": 74371, // bytes
"image": "data:image/jpeg;base64,..."
}
}
The snapType field tells your downstream system what triggered the capture:
Scheduled for time-based reads, PIR for motion-triggered events,
Button for manual test captures. For meter reading workflows, Scheduled
is the typical operating mode — configure a read interval in the Capture Settings
section of the Web UI (up to 8 scheduled times per day, or interval-based in minutes/hours/days).
The NE101’s deep sleep current is dominated by the ESP32-S3 in low-power mode — not the communication module. In sleep, the device draws ≤1 W standby regardless of which radio module is fitted. The difference between LTE and HaLow appears during the active transmission window of 5–15 seconds per capture event.
LTE Cat.1 has a higher peak TX current than HaLow, particularly on weak-signal sites where the modem boosts transmit power to maintain the cellular link. In underground pits with marginal LTE signal, this can meaningfully reduce battery life compared to a HaLow deployment with a nearby AP. On strong-signal LTE sites (–80 dBm or better), the practical difference is small.
The CamThink Battery Life Calculator lets you model expected battery life for your specific capture frequency and radio configuration before purchasing. For a 4× capture per day schedule in Wi-Fi mode, the NE101 achieves 3+ years on 4× AA batteries. LTE at the same frequency on a good signal site is in the 1.5–2.5 year range depending on transmission time per event.
If you leave with one rule: use LTE for scattered remote sites; use HaLow for dense concentrated deployments. Both modules are physically interchangeable on the NE101, so you can re-evaluate without replacing hardware — just swap the module and update the Web UI configuration. For large-scale projects, a staged pilot comparing both protocols on representative sites is worth the investment before committing to a module SKU for the full deployment.
iot.1nce.net, no auth), Hologram
(hologram, no auth), Twilio Super SIM (super, no auth),
Vodafone IoT (m2m.vodafone.com), Emnify (em). For your specific
carrier, the APN string is provided in the SIM activation documentation. Configure this in
the NE101 Web UI under Internet Connection → Cat.1 → APN.