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EX LEL Gas Detector by Forensics | Wall Mount Industrial Grade | Continuous Monitoring | USA NIST traceable Calibration | Adjustable Sound & Light Alarms | Relay Output | 0-100% LEL | - Amazon.com
HONEYWELL, CO/H2S/LEL/NH3/O2/PID, 0 to 100 ppm, Multi-Gas Detector - 498Z94|MBB3-A1C1RE8-010 - Grainger
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