AKG SM2WMS40MINVOCSETISM - ISM1 Vocal Band UHF Wireless System with Microphone and Receiver

AKG WMS40 Mini Vocal Set ISM1 - UHF Wireless System with Handheld Microphone (863.100 MHz)

The AKG WMS40 Mini Vocal Set ISM1 is a single-frequency UHF wireless system designed for vocals and voice-overs looking for simplicity, reliability and long battery life. It operates in the ISM1 band (863.100 MHz) , license-free in the European Union, and includes the SR40 Mini receiver and an HT40 Mini handheld transmitter with a cardioid dynamic capsule. HDAP (High Definition Audio Performance) technology ensures clear and stable transmission, with an audio bandwidth of 40 Hz to 20 kHz , THD 0.8% and a signal-to-noise ratio of 110 dB(A) . The system is plug & play , has 30 hours of use with a single AA battery and offers a balanced 6.3 mm jack output with level control on the receiver. The SR40 Mini's LED indicators (power, RF OK and audio clip) facilitate live adjustment. Supplied with universal 110–240 V power supply with EU/UK/US adapters and battery.

Main features

• ISM1 band 863.100 MHz free of registration and fees in Europe.
• HT40 Mini handheld microphone with cardioid dynamic capsule and On/Off/Mute switch.
• SR40 Mini non-diversity receiver with balanced 6.3 mm jack output and volume control.
• Long battery life : up to 30 hours with 1 AA battery.
• Typical RF power : 10 mW (ERP) .
• Audio : 40 Hz–20 kHz, THD 0.8% (@1 kHz), SNR 110 dB(A).
• LED indicators on the receiver: power, RF OK, and audio clip.
• Switching power supply 110–240 V with EU/UK/US adapters.
• Immediate configuration (plug & play) and fixed frequency (no channel searching).
• Typical line-of-sight range : up to ~ 20 m (ideal conditions).

Product benefits

• License-free operation in the EU thanks to ISM1 (863.100 MHz), ideal for mobile events and rentals.
• Clear, stable sound with HDAP technology and a cardioid capsule that prioritizes your voice and reduces feedback.
• Minimum operating cost : 30 hours on a single AA battery reduces battery changes and waste.
• Easy operation : clear indicators, level control on the receiver and direct on/mute on the microphone.
• Easy integration with active speakers and mixers via a balanced 6.3 mm jack output.

Use cases

• Voices in corporate presentations , classes and conferences .
• Animation and DJ in small rooms , bars and clubs.
• Places of worship, hotels, and gyms that require a reliable and quick-to-install system.

Frequently Asked Questions

• Is this frequency legal in my country? In the EU, the ISM1 band (863.100 MHz) is free to use. Check local regulations if you operate outside the EU.
• How many systems can I use at once? Typical recommendation: up to three simultaneous systems under suitable conditions and with available frequency separation.
• What output does the receiver offer? Balanced 6.3 mm jack with level control. No XLR output.
• What's included in the set? SR40 Mini receiver, HT40 Mini handheld transmitter, 110–240 V power supply with EU/UK/US adapters, and 1 AA battery.

Description for projects

ISM1 fixed-frequency UHF wireless system (863.100 MHz) comprising an SR40 Mini receiver and an HT40 Mini handheld transmitter (cardioid dynamic capsule). Audio 40 Hz–20 kHz, THD 0.8 % (@1 kHz), SNR 110 dB(A), RF power 10 mW. Balanced 6.3 mm jack output with level control. LED indicators: power, RF OK, audio clip. Power supply 110–240 V. Battery life up to 30 h with 1×AA. Receiver dimensions 133×43×132 mm; transmitter 230×Ø52.5 mm.