Milesight offers a full suite of IoT sensors that directly support ESG reporting — energy monitoring, air quality, water management, and smart control — beyond just occupancy counting. All connect via LoRaWAN to Vemcount IoT dashboards. Gateway required: Milesight UG65/UG67/SG50 → ttn.vemcount.app UDP 1700.
Why IoT sensors matter for ESG
Buildings generate 34% of global CO₂ emissions. Milesight sensors directly address all three pillars:
Environmental — energy submetering identifies wasteful loads; CO₂ monitoring drives demand-controlled ventilation; water monitoring prevents waste
Social — IAQ monitoring ensures healthy indoor environments; CO₂ <1000ppm directly improves cognitive performance
Governance — automated, auditable data for BREEAM, LEED, WELL, EU EPBD compliance, and sustainability disclosures
🔌 Energy monitoring
CT10x Series — Smart Current Transformers (circuit-level energy metering)
The core ESG energy sensor. Non-invasive clamp-on design — installs on live wires in existing panels without cutting power or rewiring. Provides circuit-level consumption data for Scope 2 carbon calculations.
CT101 | Up to 100A — office circuits, lighting, small HVAC |
CT103 | Up to 300A — larger loads, distribution boards |
CT105 | Up to 500A — main incomer, large commercial loads |
Measurement | True RMS current, accumulated ampere-hours (kWh equivalent) |
Accuracy | ±1% for currents >5A, ±3% at or below 5A |
Sampling rate | 3.3 kHz — captures harmonics and transients |
Self-powered | Powered from the monitored circuit — no battery, no wiring |
Temperature probe | External NTC included (-20°C to +100°C) — detects overheating equipment |
No shutdown needed | Installs on live wires — ideal for occupied buildings, schools, hospitals, concert halls |
ESG uses | Scope 2 electricity reporting, energy audits, identifying waste, net-zero tracking, per-tenant submetering |
CT3xx Series — 3-phase current transformers
CT303, CT305, CT310 for three-phase industrial/commercial systems. Same non-invasive principle — essential for manufacturing, data centres, and large commercial buildings.
WS501 / WS502 — Smart Wall Switches with energy metering
Drops straight into existing wall boxes as a direct retrofit replacement for standard switches. Adds LoRaWAN remote control AND per-circuit energy monitoring simultaneously.
Models | WS501 (1-gang), WS502 (2-gang) |
Measurements | Voltage (VAC), current (mA), active power (W), power factor, energy (kWh) per gang |
Accuracy | ±3% typical, ±5% max |
Control | Local button or remote via LoRaWAN — schedule automated after-hours shutdown |
Safety | Overcurrent protection, switch lock, power failure memory, multicast group control |
ESG uses | Lighting energy monitoring per room/zone, automated shutdown schedules, individual circuit ESG data |
WS51x — Smart Wall Socket with energy monitoring
In-wall smart socket (EU Type F/FR Type E). Monitors plugged-in device consumption in real time. Remote ON/OFF — eliminates standby waste.
Monitoring | Real-time power, cumulative energy (kWh), overload alerts |
Control | Remote ON/OFF, scheduled switch, multicast (up to 4 devices), D2D automation |
ESG uses | Standby power elimination, plug-load monitoring, per-workstation energy tracking |
EM300-DI — Pulse Counter (utility meter integration)
Connects to any existing meter with pulse output — water meters, gas meters, electricity meters. Converts pulses to wireless LoRaWAN data. The fastest path to utility submetering without replacing meters.
Compatible signals | Dry contact, reed switch, open collector pulse outputs |
Noise filtering | Auto-filters signals <250μs — prevents false counts from nearby electrical equipment |
ESG uses | Water consumption (litre-level), gas consumption, electricity submetering per floor/tenant, automated utility ESG reporting |
🌬️ Air quality & carbon monitoring
AM Series — Indoor Air Quality (IAQ) sensors
Indoor air quality is a core ESG-Social metric. CO₂ >1000ppm causes measurable cognitive decline; optimal range is 400–800ppm.
AM102 / AM102L | CO₂ + Temperature/Humidity. Entry level, up to 9 years battery. |
AM103 / AM103L | CO₂ + Temperature + Humidity. Tri-colour LED + emoticon display. 3–4 year battery. NDIR double-band CO₂ (factory calibrated). NFC config. |
AM307 / AM308 | 9-in-1: CO₂, Temperature, Humidity, Light, TVOC, PM2.5, PM10, Barometric pressure + HCHO or O₃. E-ink display option. |
AM319 | Full 9-in-1 IAQ with E-ink screen and emoticon comfort indicator. Comprehensive parameter set for WELL/BREEAM evidence. |
Coverage guide: 1 sensor per 100–150m² for offices and classrooms. High-traffic areas require additional coverage.
ESG uses: WELL Building certification, BREEAM credits, demand-controlled ventilation (auto-trigger HVAC on CO₂ levels), occupant health KPIs, IAQ compliance reporting.
Best ESG ROI combination: AM103 CO₂ sensors + Milesight WT thermostats or HVAC controllers via D2D. HVAC activates automatically when CO₂ exceeds threshold — maintains air quality while eliminating unnecessary ventilation energy use. This is demand-controlled ventilation without BMS integration.
EM500-CO2 — Outdoor CO₂ sensor
Industrial outdoor CO₂ + Temperature + Humidity + Barometric pressure. NDIR double-band sensor. Up to 15km rural range. For perimeter carbon monitoring, greenhouse gas stations, outdoor campus air quality, and carbon capture verification.
💧 Water management
EM500-SWL — Submersible Water Level Sensor
Measures liquid levels in wells, tanks, and open water — essential for water consumption monitoring and conservation. Designed for harsh outdoor environments.
ESG uses: Water tank level monitoring, rainwater harvesting, irrigation consumption tracking, flood early warning.
EM300-MLD / EM300-SLD — Leak detection
EM300-MLD | Membrane type — large surface areas, under raised floors, along pipe corridors |
EM300-SLD | Spot type — targeted points (under sinks, around joints, at drains) |
ESG uses: Water waste prevention, early maintenance alerts, water conservation reporting.
WS303 — Mini Leak Detection Sensor
0.5mm detection threshold, IP67, 5-year battery, gold-plated probes. Compact spot detector for bathrooms, plant rooms, kitchens, and server rooms. See restroom sensors article for full specs.
🏭 Additional ESG-relevant sensors
GS101 — Single Gas Detector
Configurable for CO, H₂S, NO₂, O₃, SO₂, and other gases. Worker safety and indoor air quality compliance in industrial or semi-industrial environments. D2D for direct ventilation activation.
EM500 Series — Outdoor environment monitoring
Industrial-grade outdoor sensors: soil moisture (EM500-SMT), pipe pressure (EM500-PP), water level (EM500-SWL), CO₂ (EM500-CO2), PT100 temperature probes (EM500-PT100). For campus environmental monitoring and outdoor infrastructure tracking.
ESG data in Vemcount
All sensor data flows via LoRaWAN gateway to Vemcount's IoT dashboard. Configure:
Energy dashboards — kWh per zone/circuit from CT10x + WS50x data
Scope 2 carbon — apply grid carbon intensity factor to electricity kWh readings
IAQ dashboards — CO₂ ppm, temperature, humidity trends per space over time
Water consumption — from EM300-DI pulse counter data in litres/m³
Alerts — CO₂ >1000ppm, energy anomalies, leak detection events
ESG exports — historical data export for sustainability reports, BREEAM/LEED/WELL evidence packs
Recommended ESG bundle per building
Energy metering | CT101/CT103 on main incomer + key circuits; WS501/WS502 on lighting circuits |
Air quality | AM103 per 100–150m²; AM319 for premium or client-facing spaces |
Water | EM300-DI on water meter pulse; WS303/EM300-SLD in wet areas |
Control | WS501 lighting switches + WS202 PIR for occupancy-driven shutoff |
Gateway | 1× UG65 per floor (covers ~200m radius indoors) |