Radius® BZ1 area gas monitor, orange - LEL (CH4), CO, H2S, NO2, NO, CO2 (IR)

The Industrial Scientific Radius BZ1 Area Gas Monitor is built for the toughest environments, delivering unmatched reliability and long-term gas detection. Designed for industrial worksites, it detects up to seven gases simultaneously, including combustible and toxic gases, using SafeCore sensor technology for maximum accuracy.
With a 50-day runtime on a single charge and external power supply options for unlimited operation, the Radius BZ1 eliminates the hassle of frequent recharging. Its LENS® Wireless system allows seamless communication with other monitors, ensuring comprehensive site safety. In high-noise areas, the 105 dB audible alarm and customizable action messages like “EVACUATE” or “VENTILATE” provide clear, instant alerts.
Ideal for construction, manufacturing, and confined spaces, this rugged, weatherproof monitor ensures 24/7 protection, while remote monitoring via iNet Now allows safety managers to respond instantly to gas hazards.
✔ Simultaneous detection of up to 7 gases✔ 50-day runtime & unlimited power options✔ 105 dB alarms & bright LED alerts for high-noise environments✔ Wireless connectivity for real-time monitoring✔ Ideal for hazardous locations & industrial worksites











How the BZ1 Area Monitor Creates a Dynamic Safety Network 















The Radius® BZ1 shares gas readings and alarms with other units and personal gas monitors through LENS® Wireless, so you can create a flexible safety network across your operations.
























Detect Up to 7 GasesWith Radius BZ1, you can detect up to seven gases simultaneously using 22 sensor options, including infrared (IR) and photoionization detectors (PID).

Increase Worker SafetyDualSense® Technology uses two sensors to detect the same gas, bolstering your safety efforts.

Get Unlimited Run TimeMinimize the cost of labor and risks of charging and rotating equipment in hazardous locations using different external power supply options, which can provide unlimited run time.

Customize Alarm MessagesKnow what’s happening at a distance with the largest display of any area monitor and customizable alarm action messages, such as "EVACUATE" or "VENTILATE."

Command AttentionCut right through high-noise environments with alarms that sound at 105 dB, plus bold LED lights.


Power Source and Run Time


50 days (1200 hours) typical for Standard 4-Gas (LEL-IR, H2S, CO, O2) with built-in battery
30 days (720 hours) typical for Standard 4-Gas with Wireless Communication (LEL-IR, H2S, CO, O2) with built-in battery
Unlimited runtime for Standard 4-Gas (LEL-IR, H2S, CO, O2) with external power supplies (solar, IS, non-IS)
Unlimited runtime for Standard 4-Gas with Wireless Communication (LEL-IR, H2S, CO, O2) with external power supplies (solar, IS, non-IS)
Rechargeable nickel-metal hydride (NiMH) battery
with wireless ≤8 hour recharge time

Different configurations of gas sensors available on request