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Opus Loop Receiver Measurer is the most compact loop listening device on the market.

It allows anybody to listen to an audio frequency induction loop system just like they were wearing an hearing device switched to the « T » position.

In order to make sure your loop system is functional and respecting the IEC 60118-4 norm it is essential to use a control device. The OP-LRM is an easy-to-use and straight forward solution to do so.

Just by turning it on, you’ll be able to control the quality of the signal received as well as making sure it respect the international norm, thanks to its easy to read, led indicators.

Battery type Litium-ion battery
Battery charging port Micro-USB male
Power indicator Yellow LED :  Flashes when OP-LRM is turned on
Frequency response Standard : Flat 85 Hz – 6kHz ±0.5dB
Low cut : 400Hz – 6kHz – 3dB ( similar to hearing aid )
Output power >100mW into 16Ω load
Magnetic field strength indication Yellow LED >-3dB
Green LED Between -3dB and 3dB
Red LED <3dB
Headphone output Standard stereo headphone, 3,5mm
Dimensions Width 35mm, depth 20mm, height 60mm
Weight 34g, incl. batteries
Color Black
Temperature range IP20 : 20 to 90% relative humidity, -10 to 45°C
Stereo headphone ( included ) Impedance 32Ω per side
Headphone sensibility 102±3dB / mW
Speaker Dimensions 40mm
Standards Compliance
The OPLRM is CE marke d to all relevant safety and EMC standards.