AKG WMS40MINVOCSETISM3 - ISM3 Vocal Band UHF Wireless System with Microphone and Receiver

AKG WMS40 Mini Vocal Set ISM3 - Fixed-Channel UHF Wireless System with HT40 Mini Handheld Microphone and SR40 Mini Receiver (864, 850 MHz)

The AKG WMS40 Mini Vocal Set ISM3 is a fixed-frequency UHF wireless system designed for vocals in presentations, education, small stages, and houses of worship. This ISM3 variant operates on 864.850 MHz —a license-free band in Europe—and combines the HT40 Mini handheld microphone ( cardioid dynamic capsule, ON/MUTE/OFF switch) with the SR40 Mini receiver , which offers a 1/4" jack output , volume control, and three LED indicators ( POWER , RF OK , AF CLIP ) for clear, straightforward operation.

Its strong point is its extra-long battery life : up to 30 hours on a single AA battery in the transmitter, while maintaining crystal-clear sound thanks to HDAP compression. The link uses FM modulation with an audio bandwidth of 40 Hz to 20 kHz . The receiver is non-diversity —ideal for short distances—with a typical range of ≈ 20 m line-of-sight. The set includes a switching power supply for direct connection and an AA battery for immediate operation.

Main features

• ISM3 version (864,850 MHz) in the European band 863–865 MHz, license-exempt for general use.
• HT40 Mini microphone with cardioid dynamic capsule and ON/MUTE/OFF switch.
• SR40 Mini receiver with 6.3 mm jack output , volume control and POWER , RF OK and AF CLIP LEDs.
• Up to 30 hours of use with 1×AA in the transmitter.
• 40 Hz–20 kHz audio with HDAP compression for clarity and intelligibility.
• Plug & play configuration : fixed frequency and switching power supply included.
• Non-diversity receiver , designed for short distances (≈ 20 m LoS) and controlled scenarios.

Product benefits

• Instant start-up : simple controls and fixed channel avoid complex configurations.
• True mobility : long range with a single AA battery reduces downtime and operating costs.
• Focused Voice : The cardioid capsule offers good rejection of feedback and side noise.
• Direct integration : 6.3 mm jack output to mixers, interfaces or active speakers.

Use cases

• Conferences and training in classrooms, multipurpose rooms, and companies.
• Events and worship where reliability and speed of assembly are required.
• Small stages and animation with basic wireless microphone needs.

Frequently Asked Questions

• What is the frequency of this version? ISM3 864.850 MHz (European license-free band).
• Can multiple systems be combined? Yes, using different channels (e.g., ISM1/ISM2/ISM3) to avoid interference.
• Does it include everything you need to get started? Yes: SR40 Mini receiver, HT40 Mini microphone, switching power supply , and 1 AA battery .

Description for projects

Fixed-channel analog UHF wireless system for voice. ISM3 version (864.850 MHz) . FM modulation, 40 Hz–20 kHz audio. SR40 Mini receiver : 6.3 mm jack output, volume control , POWER/RF OK/AF CLIP LEDs; no diversity . HT40 Mini transmitter : cardioid dynamic capsule, ON/MUTE/OFF , 1×AA power supply, up to 30 h autonomy. Switching power supply included. Typical range ≈ 20 m line of sight.