Pressac Wireless Energy Monitoring Sensors

Pressac Communications Ltd is a UK designer and manufacturer of wireless smart building sensors, registered in Nottingham, England. Its parent business traces back to the 1950s, and the company began developing energy-harvesting wireless sensor hardware in 2014. It supplies sensors that IoT software and service companies integrate into energy, occupancy and air-quality solutions.

The energy range includes self-powered CT clamp current sensors for single and three-phase cables from 1 to 600 A, a LoRaWAN CT clamp version, pulse counters for electricity, water or gas meters, and dry contact sensors for equipment such as UPS and air conditioning. Data passes through gateways and repeaters to third-party platforms. The company states it delivers over 4 million products a year.

• CT clamp sensors: measure AC current in single or three-phase cables from 1 to 600 A.
• LoRaWAN CT clamps: long-range version for large sites.
• Pulse counters: read electricity, water or general meters and machinery outputs.
• Dry contact sensors: monitor UPS and air conditioning status.
• Gateways and repeaters: industrial gateway and smart repeater for connectivity.
• Environment sensors: CO2, temperature, humidity and occupancy range.

A Vietnamese integrator can add CT clamp sensors to the distribution boards of a hotel to track floor-level electricity. A factory can monitor air-conditioning and UPS status with dry contact sensors. Pulse counters can feed old water meters into a central dashboard.

Clamp-on CT sensors are non-intrusive, so electricity can be monitored without cutting cables. Self-powered design lowers maintenance. Pulse counters connect existing meters, avoiding meter replacement. Cyber Essentials Plus accreditation supports security reviews.

Retrofit energy monitoring is growing as building owners seek submetering without replacing existing meters. In Southeast Asia, rising electricity costs and green building certification push offices, hotels and factories toward sensor-based energy visibility.

Registered in England and Wales, Nottingham, with a 5,000 sqm UK manufacturing facility. Holds Cyber Essentials Plus (March 2026) and RESET AIR accreditation for air sensors. Company number 05623170.