E-H2-P: ENVIROMUX powered hydrogen gas detector 

used to detect leaks of hydrogen gas in battery monitoring/charging rooms, substations, uninterruptible power supplies (UPS), and hydrogen fueled back-up power systems

• Alarm set point: 10% LEL hydrogen gas
• SPDT Alarm and normally-closed output relay
• Self-restoring or latching options
• Sensor requires no maintenance or recalibration
• Includes mounting hardware
• Includes 12V/1A power supply
• Compatible with and powered by ENVIROMUX Mini; Micro; 1W