Watteco BoB Assistant EU868 AtEx Zona 1

In hazardous industrial environments where explosive gases or combustible dust may be present, monitoring analog and digital signals is critical for safety and efficiency. The Watteco BoB Assistant EU868 is an ATEX-certified LoRaWAN sensor designed for Zone 1 (gas) and Zone 21 (dust) areas. It features two configurable analog inputs (4-20mA or 0-10V) and two digital inputs (dry contact or pulse counter), enabling connection to a wide range of industrial sensors and devices. Powered by two replaceable LS14500 lithium batteries, it offers up to 10 years of battery life, minimizing maintenance in remote locations. With an IP65-rated polycarbonate housing, it withstands harsh conditions and operates in temperatures from -20°C to +60°C. Configuration is simple via NFC or LoRaWAN downlink, and its internal antenna ensures a compact, robust design. Certified by CE, LoRaWAN Alliance, and ATEX, this device is ideal for industrial IoT applications requiring reliable, long-range wireless communication in explosive atmospheres.

Key specifications

• Communication technology: LoRaWAN Class A
• Frequency band: EU868 (863-870 MHz)
• ATEX certification: II 2 G Ex ib IIB T4 Gb / II 2 D Ex ib IIIC T135°C Db
• Analog inputs: 2 (configurable 4-20mA or 0-10V, 12-bit resolution)
• Digital inputs: 2 (dry contact or pulse counter)
• Power source: 2x LS14500 Li-SOCl2 batteries (replaceable)
• Battery life: up to 10 years (depending on configuration)
• Ingress protection: IP65
• Operating temperature: -20°C to +60°C
• Housing material: polycarbonate
• Configuration: NFC, LoRaWAN downlink
• Antenna: internal
• Certifications: CE, LoRaWAN Alliance, ATEX

Why choose it

This sensor is engineered for hazardous area monitoring, combining intrinsic safety with long-range LoRaWAN connectivity. Its versatile inputs allow integration with existing industrial sensors, while the long battery life and robust enclosure reduce operational costs. The ATEX Zone 1 rating ensures compliance in explosive atmospheres, making it a reliable choice for oil and gas, chemical, and pharmaceutical industries.

Ideal use cases

• Monitoring pressure, temperature, or flow transmitters in refineries
• Counting pulses from flow meters or energy meters in hazardous zones
• Detecting dry contact status (e.g., valve open/close) in chemical plants
• Remote data acquisition in dust-rich environments like grain silos

Good to know

The device is configured via NFC using a smartphone app or via LoRaWAN downlink commands, allowing field adjustments without opening the enclosure. Batteries are user-replaceable, extending the product's service life. The internal antenna simplifies installation and reduces the risk of damage in industrial settings.