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Efento Temperature / Humidity / Pressure / CO2 / IAQ Loggers (10 models) Category: ENVIRONMENTAL, AGRICULTURAL & BUILDING SENSORS Network: NB-IoT Protocols MNO Certifications Notes ⚠ Proprietary CoAP/Protobuf encoding — no standard LwM2M, no standard MQTT. Efento deliberately chose not to implement LwM2M/MQTT (vendor statement). Old firmware: no DTLS by default. One-IoT DM: require

Dragino NDS01/CPN01/NDS03A (Door) · NSE01/NSPH01/NLMS01/N95S31B (Agri) · NBSN95A · NDDS20/NDDS75/NMDS200 (Distance) Category: ENVIRONMENTAL, AGRICULTURAL & BUILDING SENSORS Network: NB-IoT Protocols MNO Certifications Notes ⚠ SECURITY CRITICAL: Dragino NB-IoT uses plain MQTT (no TLS) + plain CoAP (no DTLS). Not suitable for production One-IoT DM without TLS enforced at

EDMI WP-20 Ultrasonic / GC-25AU / GR-8BU Category: UTILITY METERS — Smart Water / Gas / Heat / Electricity Meters Network: Cat M1 / NB1 Protocols MNO Certifications Notes WP-20: NB1 water pulse meter. GC-25AU: Cat M1 gas meter (AU-market). GR-8BU: Cat M1 gas residential. All Telstra certified. LwM2M via EDMI meter firmware.

Maddalena Arrow Wan Category: UTILITY METERS — Smart Water / Gas / Heat / Electricity Meters Network: NB-IoT Protocols MNO Certifications Notes Metering module for water meters. NB-IoT. MQTT to One-IoT DM.

Pietro Fiorentini SSM-U4 Category: UTILITY METERS — Smart Water / Gas / Heat / Electricity Meters Network: NB-IoT Protocols MNO Certifications Notes Ultrasonic gas meter. NB-IoT. MQTT to One-IoT DM.

Flonidan SciFlo Category: UTILITY METERS — Smart Water / Gas / Heat / Electricity Meters Network: NB-IoT Protocols MNO Certifications Notes Ultrasonic gas meter. NB-IoT. MQTT to One-IoT DM.

Huizhong SCL-61H Ultrasonic Category: UTILITY METERS — Smart Water / Gas / Heat / Electricity Meters Network: Cat M1 + NB1 Protocols MNO Certifications Notes Dual-mode Cat M1 + NB1, Telstra certified. Ultrasonic measurement.