Honeywell E3SRMO2 Sensor

The Honeywell E3SRMO2 is a high-performance E3Point oxygen (O2) remote mounted sensor engineered for precise atmospheric monitoring in critical environments. As an identical replacement for the Honeywell 1309A0056, this unit integrates seamlessly with E3Point standalone gas monitors (E2SA/E2SAH) to provide dependable dual-gas detection capabilities. Designed for the rigors of mechanical rooms, parking garages, and industrial facilities, the Honeywell E3SRMO2 electrochemical sensor delivers a linear 4-20 mA output across a 0–25% volume detection range. The plug-and-play sensor design simplifies maintenance, allowing for rapid field replacement without extensive downtime. Built with a robust polycarbonate housing, it maintains operational integrity in temperatures ranging from -40°C to 50°C. For contractors managing demand control ventilation (DCV) or building automation systems via BACnet or Modbus, this remote sensor provides the necessary 0.1% resolution to ensure safety and code compliance while optimizing energy consumption through accurate gas concentration data.

• Dual-Gas Monitoring: Enables E3Point standalone monitors to track oxygen levels in addition to a local sensor, maximizing coverage area.
• Direct Technical Compatibility: Fully interchangeable with part number 1309A0056 for streamlined inventory and service scheduling.
• Harsh Environment Durability: Rated for extreme temperatures and resistant to corrosion, making it ideal for high-traffic loading docks and battery charging rooms.
• Factory Calibrated Hardware: Features smart cartridge technology to ensure immediate accuracy upon installation with minimal field adjustment.

Common Questions

Can the E3SRMO2 be used with network-version monitors?
No, this remote sensor is specifically designed for use with E3Point standalone gas monitors. Networked units typically utilize local sensing cartridges only.

Is this the correct replacement for the 1309A0056?
Yes, the E3SRMO2 is the direct, identical replacement for Honeywell 1309A0056, ensuring exact physical and electrical matching for existing installations.

Do I need to power down the system during installation?
Yes, it is critical to remove power from the E3Point base unit before connecting or replacing the remote O2 sensor to prevent damage to the electrochemical cell or circuit board.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.