Skip Navigation

Login

Log In
Sign Up

Portable Inspection Solutions Overview

Handheld Asset Condition Monitoring

Route-Based Inspections

Electrical Inspection

Asset Troubleshooting

Energy Audit

Building Diagnostics & Indoor Air Quality

Liquid Leak Detection

Compressed Air & Gas Leak Detection

Hazardous Atmosphere Inspections

Regulatory-driven LDAR

Continuous Monitoring Overview

Applications

Battery Monitoring

BESS Monitoring

Early Fire Detection

Process & Quality Assurance

Substation & Switchgear

Industries

Automotive Manufacturing

Battery Life Cycle

Data Center

Energy Production

Metals Foundry

Warehouse and Storage

Waste & Recycling

First Responders Overview

Firefighting

Firefighting Overview

Search and Rescue

Maritime Safety

Industrial Safety

Law Enforcement

Law Enforcement Overview

Search and Rescue

Wildlife / Anti-Poaching

Intelligent Transportation Systems Overview

Intersection Control

Data Collection

Automatic Incident Detection

Fire Detection

Traffic Insights

Traffic Command & Control

Optical Gas Imaging Overview

Industry

Oil & Gas

Utility

Steel

Chemical

Use Case

Regulatory Compliance

Safety

Environmental Stewardship

Leak Quantification

Research & Science Overview

Industries

Academic / University Research

Industrial Research

Open Air Test Ranges

Applications

Advanced Radiometry

Aerospace Research

Automotive Testing

Electronics Design & Testing

High-Speed Thermal Imaging

Material Research & Testing

Target Tracking & Long Range Measurements

Security Overview

Applications & Industries

Commercial Security

Perimeter Protection

Transportation Security

Technologies

Analytics & AI

Thermal Vision

Visible Cameras

Video Management Systems

Thermal Machine Vision Overview

Applications

Food and Beverage

Manufacturing

Mining

Process Monitoring & Control

Quality Assurance

Industries

Early Fire Detection

Wood Processing Industry

Weld Inspection
Handheld Thermal Cameras

Acoustic Imaging Cameras

Handheld Gas Detection Cameras

Infrared Guided Measurement

Flir One®

IR Windows

Portable Inspection Software

NEW iXX-Series: Revolutionizing Thermal Inspections with App-Driven Intelligence

Fixed Thermal Cameras

Fixed Gas Detection Cameras

Multicamera Vision Systems

Continuous Monitoring Software

Firefighting Cameras

Tactical & Law Enforcement Systems

Expose your surroundings with the FLIR Scout Pro

Urban

Inter-Urban

Traffic Management Software

Handheld Gas Detection Cameras

Fixed Gas Detection Cameras

Locate and document gas emissions seamlessly with the FLIR G-Series

Research & Science Cameras

Flir MIX Systems

R&D Lenses

R&D Software

Thermal Security Cameras

Visible Security Cameras

Security Software

Radars

Servers, Storage & Clients

Bench Instruments

Calibration Tools

Electrical Tools

Health, Safety & Environmental

HVAC & Air Quality

Industrial Imaging & Inspection

Mechanical Maintenance

Temperature & Humidity

Handheld Thermal Cameras

Portable Inspection Software

Infrared Guided Measurement

Thermal Machine Vision Cameras

Thermal Machine Vision Software
Discover Center Articles

By Topic

Acoustic Imaging

Building Diagnostics

Condition Monitoring

Early Fire Detection

Electrical / Mechanical Inspections

Firefighting

Gas Detection

Home & Outdoor

HVAC-R

Industrial

Intelligent Transportation Systems

delete

Manufacturing

Moisture & Restoration

Oil & Petrochemical

Outdoor, Hunting & Tactical

Process / Quality Assurance

Professional Tools

Public Safety

Research & Science

Security

Utilities

All Webinars & Training Videos

Condition Monitoring

Intelligent Transportation Systems

Optical Gas Imaging

Research & Science

Security

Portable Inspection Solutions Overview

Handheld Asset Condition Monitoring

Route-Based Inspections

Electrical Inspection

Asset Troubleshooting

Energy Audit

Building Diagnostics & Indoor Air Quality

Liquid Leak Detection

Compressed Air & Gas Leak Detection

Hazardous Atmosphere Inspections

Regulatory-driven LDAR
Continuous Monitoring Overview

Applications

Battery Monitoring

BESS Monitoring

Early Fire Detection

Process & Quality Assurance

Substation & Switchgear

Industries

Automotive Manufacturing

Battery Life Cycle

Data Center

Energy Production

Metals Foundry

Warehouse and Storage

Waste & Recycling
First Responders Overview

Firefighting

Firefighting Overview

Search and Rescue

Maritime Safety

Industrial Safety

Law Enforcement

Law Enforcement Overview

Search and Rescue

Wildlife / Anti-Poaching
Intelligent Transportation Systems Overview

Intersection Control

Data Collection

Automatic Incident Detection

Fire Detection

Traffic Insights

Traffic Command & Control
Optical Gas Imaging Overview

Industry

Oil & Gas

Utility

Steel

Chemical

Use Case

Regulatory Compliance

Safety

Environmental Stewardship

Leak Quantification
Research & Science Overview

Industries

Academic / University Research

Industrial Research

Open Air Test Ranges

Applications

Advanced Radiometry

Aerospace Research

Automotive Testing

Electronics Design & Testing

High-Speed Thermal Imaging

Material Research & Testing

Target Tracking & Long Range Measurements
Security Overview

Applications & Industries

Commercial Security

Perimeter Protection

Transportation Security

Technologies

Analytics & AI

Thermal Vision

Visible Cameras

Video Management Systems
Thermal Machine Vision Overview

Applications

Food and Beverage

Manufacturing

Mining

Process Monitoring & Control

Quality Assurance

Industries

Early Fire Detection

Wood Processing Industry

Weld Inspection
Handheld Thermal Cameras

Acoustic Imaging Cameras

Handheld Gas Detection Cameras

Infrared Guided Measurement

Flir One®

IR Windows

Portable Inspection Software

NEW iXX-Series: Revolutionizing Thermal Inspections with App-Driven Intelligence
Fixed Thermal Cameras

Fixed Gas Detection Cameras

Multicamera Vision Systems

Continuous Monitoring Software
Firefighting Cameras

Tactical & Law Enforcement Systems

Expose your surroundings with the FLIR Scout Pro
Urban

Inter-Urban

Traffic Management Software
Handheld Gas Detection Cameras

Fixed Gas Detection Cameras

Locate and document gas emissions seamlessly with the FLIR G-Series
Research & Science Cameras

Flir MIX Systems

R&D Lenses

R&D Software
Thermal Security Cameras

Visible Security Cameras

Security Software

Radars

Servers, Storage & Clients
Bench Instruments

Calibration Tools

Electrical Tools

Health, Safety & Environmental

HVAC & Air Quality

Industrial Imaging & Inspection

Mechanical Maintenance

Temperature & Humidity

Handheld Thermal Cameras

Portable Inspection Software

Infrared Guided Measurement
Thermal Machine Vision Cameras

Thermal Machine Vision Software
Discover Center Articles

By Topic

Acoustic Imaging

Building Diagnostics

Condition Monitoring

Early Fire Detection

Electrical / Mechanical Inspections

Firefighting

Gas Detection

Home & Outdoor

HVAC-R

Industrial

Intelligent Transportation Systems

delete

Manufacturing

Moisture & Restoration

Oil & Petrochemical

Outdoor, Hunting & Tactical

Process / Quality Assurance

Professional Tools

Public Safety

Research & Science

Security

Utilities
All Webinars & Training Videos

Condition Monitoring

Intelligent Transportation Systems

Optical Gas Imaging

Research & Science

Security
- About Flir
- News Center
- Contact Us
- Office Locations

Products
Legacy Products
Legacy Test & Measurement
Extech MO-SCREEN

Discontinued

Extech MO-SCREEN

Vent Cap

Product Overview

The Extech MO-SCREEN Vent Cap is a pack of five replacement caps for the MO290 Pinless Moisture Psychrometer.

Export Restrictions

Want more information on this product?

Call +1 (866) 477-3687 to speak with a knowledgeable specialist

2026 © Flir, All rights reserved.

Flir

About Flir
Teledyne Technologies
Teledyne FLIR Defense
Teledyne FLIR OEM
Flir Marine
Extech
Raymarine
Infrared Training Center

Company

News
Careers
Store
Supply Chain
Reseller & Customer Info

Support & Service

Contact Us
Support Center
Vulnerability Disclosure
Product Registration
Online Orders
Training
Webinars & Training Videos

Privacy Policy
Cookie Notice
Copyright Policy
Terms of Use

Confirm Location

Select your preferred country and language from the options below to access the appropriate version of our website.

Available Locations

United States
Australia