The LES-PTS Series Translation System is ideal for applications where noise and distractions can cause the translator to loose focus or not hear the speaker clearly. It includes:

• 2 LES-370T transmitters 
• 1 LS-1M lapel microphone 
• 1 TK-250 headset microphone 
• 1 LES-370R receiver

And your choice of:


* 3, 7 or 17 LES-370R receivers with KOSS TM602 headphones (battery and charger included)


Click here to see how it works.

Optional Accessories

TR-1, TR-2, TR-8 receiver sets
The belt pack receiver sets give you the ability to add listeners to LightSPEED’s three translation systems. Receivers are available in 4 dual-frequency groups to accommodate the need for multiple language translation in the same room. (The receiver’s frequency must match the transmitter frequency being used.) Three receiver sets are available:

TR-1: One LES-370R receiver w/KOSS TM602 headphones
TR-2: Two LES-370R receivers w/KOSS TM602 headphones
TR-8: Eight LES-370R receivers w/KOSS TM602 headphones
(battery and charger included)

Optional cradle chargers
The LES-3CC Series Charging Stations charge up to 18 LES-370T/370Rs from a single wall outlet.

Product Specifications

LES-370R Belt-pack Receiver Specifications

• RF Output Power 50 mW 
• Spurious Response 32 dB below carrier 
• Microphone Input Impedance 1 k Ohms 
• Run Time Capacity 6 hours 
• Microphone Level Audio Adjust (Variable) 0 to –12 dB 
• Weight (w/1 AA battery) 2.8 oz. 
• Dimensions 2 x 3 x 0.8 (W x H x D inches)

LES-370T Belt-pack Transmitter Specifications

• Frequency Response 100 Hz–12 kHz 
• Sensitivity –70 dB ±4 dB (0 dB = 1V/µbar, 1 kHz) 
• Connector Type 3.5 mm Mini-plug 
• Element Unidirectional, Noise-canceling 
• Weight 1.7 oz.

TK-250 Headset Microphone Specifications

• Audio Output Level 
• (TM-602 Koss Headphones) 98 dB SPL (Max) 
• (MDR-S Sony Ultralight Headphones) 114 dB SPL (Max) 
• Sensitivity 3 µV (at 40 dB S/N) 
• Image and Spurious Rejection 40 dB 
• Power Supply 1.5 V (AA) NiMH battery 
• Run Time Capacity w/Full Charge 20 Hours

TM-602 Koss Headphone Specifications (standard w/LES 370 system)

• Weight 2.5 oz. 
• Frequency Response 100 Hz–16 kHz 
• Impedance 32 Ohms 
• Sensitivity 88 dB SPL/1 mW 
• Cord Length 4 ft.

Frequency Information



*NOTE: A maximum of 7 channels can be used simultaneously. Channels 1, 3, 4, 8, 11 and 13 are compatible along with 15 or 16, but not both.

The LES-370T and LES-370R carry a 1-year limited warranty. Extended service contracts are available for an additional fee.