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The LA-350 8-unit charging tray from Listen Technologies provides a convenient and compact option for storing, charging, and distributing up to eight (8) LR-42 Stethoscope and/or LR-44 Lanyard Receivers in any combination. Additionally, the LA-350 can separately charge as many as eight (8) NiMH battery packs, giving you an easy way to have additional batteries charged and ready for customers and clients. Red and green LEDs indicate the charge status of each slot, and the tray can be mounted on a desk or wall to fit the needs of your venue and installation.


One (1) LA-350 8-Unit IR Charging/Storage Station
Eight (8) NiMH Battery Pack Charging Inserts
One (1) Tidy rack
One (1) Universal power supply
One (1) Manual


  • Convenient option for storing and charging receivers or battery packs
  • Compatible with LR-42 and LR-44 receivers in any combination
  • Also charges up to eight (8) LA-364 NiMH battery packs
  • Permanently mountable to desks or walls depending on your needs
  • Automatic charging turns off power to each unit as it reaches full power
Configurations & Architectural Specs


LA-350-01 8-Unit IR Charging/Storage Station (North America)*
LA-350-02 8-Unit IR Charging/Storage Station (Asia, UK)*
LA-350-03 8-Unit IR Charging/Storage Station (Euro)*
LA-350-04 8-Unit IR Charging/Storage Station (Australia)*

*01, 02, 03, and 04 designation refers to international plug type (type B, G, C, and I) for the power supply.

Architectural Specs

The charging and storage platform shall accommodate eight (8) receivers and eight (8) rechargeable battery packs. The platform shall independently charge each receiver. A bicolor LED shall be provided to show the status of the charging process. The platform shall be capable of being mounted on a flat or vertical surface. The unit shall employ a universal power supply that shall be UL/CSA, FCC, IC and CE, RoHS certified. The LA-350 is specified.

Product Specifications
Specification LA-350


Bicolor LED Red when charging, Green when charging is complete


Power Supply Input 100-240 VAC, 47-63 Hz
Power Supply Output 7.5 VDC, 4.0 A
Power Supply Connector 5.0mm x 2.1mm Barrel
Power Supply Type In-line switching mode power supply, Listen part number LA-204
Compliance UL, CE Listed


Width 13.6 in. (34.5 cm)
Height 1.5 in. (3.8 cm)
Depth 5.4 in. (13.7 cm)
Color Dark Grey with White Silk Screening
Shipping Weight 4.0 lbs. (1.8 kg)
Mounting Desk of wall mount
Weight 1.2 lbs. (544 g)


Temperature - Operation 14 ?F(-10 ?C) to 104 ?F(+40 ?C)
Temperature - Storage -4 ?F (-20 ?C) to 122 ?F (+50 ?C)
Relative Humidity 0 to 95% relative humidity, non-condensing


Standards FCC, Industry Canada, CE, RoHS
Used With
Q What is Listen Technologies product warranty?
A Click for Listen's product warranty.
Q How many receivers can I store/charge?
A Up to eight.
Q Can I charge LA-364 IR NiMH Rechargeable Battery Packs in this unit?
A Yes, place the LA-364 units into the supplied inserts and place them in the charger.
Q Is each receiver or battery pack charged separately?
A Yes, the LA-350 monitors each battery pack/receiver separately and shuts down the charge to that battery when the charge is complete.
Q Can I charge alkaline batteries in the LA-350?
A No, alkaline batteries are not rechargeable. Do not attempt to charge these as damage may occur.
Q Where can I use the LA-350?
A Many places around the world. It has a universal power supply.
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