Testo 315-4 CO Warning Instrument
by Testo
Last updated Mar 29, 2026 · 1 revision
TUV-certified personal CO warning instrument with 50-hour battery life and printout capability for combustion appliance safety assessments.
6.3 - Good Custom · Contact for pricing 6 Features
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www.testo.com
About This Product
The Testo 315-4 is a TUV-certified CO measuring instrument built to DIN EN 50543 standard for reliable ambient carbon monoxide detection near heating systems. With a 0-100 ppm measurement range, adjustable visual and audible alarm thresholds, and 50-hour Li-ion battery life, it provides continuous personal safety monitoring during furnace and boiler service. On-site printout capability and IP40-rated construction support professional documentation requirements.
FSH Score Breakdown
Ease of Use 7.5
Features 6.5
Support 7.5
Value 7.0
Integrations 5.5
AI Capabilities 1.0
Customer Reviews
Features
6 features confirmed across
3categories· Showing confirmed capabilities only
Hardware Features3features
Auto ShutoffAutomatic power-off function for energy-efficient operationRechargeable BatteryBattery Life 50hTouchscreen DisplayDigital screen display
Equipment & Asset Management2features
AlertsOptical and audible alarm alerts when limit values are exceededLong-Term Environmental MeasurementParallel humidity and temperature measurement
Compliance & Safety1feature
Carbon Monoxide MeasurementAccurate carbon monoxide measurement from 0 to 100 ppm
Pricing
- Model
- Custom
- Starting at
- Contact for pricing
- Notes
- Price not publicly listed by US retailers — contact Testo or authorized distributors for quotes. Estimated $300-$500 USD range based on similar Testo CO instruments. Precise ambient CO measuring instrument with electrochemical CO sensor, TUV-tested per EN 50543. Features bright digital display for real-time readings, adjustable optical and acoustic alarms for hazardous CO levels. Includes USB mains unit, cable, and calibration protocol. Optional temperature/humidity probe module available. Optional TopSafe protective case for damp/dirty environments. Optional fast printer for on-site printouts. Used by HVAC technicians for safety monitoring around furnaces, boilers, and combustion equipment.
