HELIOS® – Wireless Optogenetic System

Head-Mounted Extra Light Infrared Optogenetic Stimulation

The HELIOS® system is Plexon’s newest innovation in optogenetic technology which provides a wireless, lightweight, and reusable solution for high power pulsed optogenetic stimulation in freely moving small animals.

helios wireless optogenetic blue

Features Include:
  • Lightweight modules can be used with mice and rats without impeding behavior
  • Infrared communication, controlled by the PlexBright 4 Channel Controller or TTL device, eliminates the need for patch cables
  • Charge and re-use the LED Module repeatedly in multiple subjects

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Calculate Battery Life:

calculate battery life helios equation Duty cycle is the percentage of time the LED light output is on relative to the total time the receiver is turned on Example: How long will the battery last on a Blue HELIOS LED module if you deliver 15mW pulses with a 5% duty cycle? calculate battery life equation helios example


Technical Specifications and Options

Weight 2.8 grams (includes battery)
Dimensions 20 x 15 x 20 mm
Battery Life Dependent on pulse intensity and duty cycle (see equation)
Transmission Range 2 feet (single transmitter; multiple transmitters can be purchased for larger arenas)
Ferrule Options LC or FC

Charging Time (via USB)
15 minutes: 70% charged
1 hour: 90% charged

Pattern Source PlexBright 4 Channel Controller or TTL device



Helios LED Power Output

HELIOS LED Module Measured Output¹
Available Light Output
(Wavelength/Max Current)
At the LED Module using 1ms pulses with 1% duty cycle Per charge; Based on minimum power outputs
55mW 2.3mWh
15mW 0.63mWh
22mW 1.0mWh
24mW 0.92mWh

¹Power values are measured using pulsed stimulation (1 msec pulses)

Technical Specs and Data Sheets

Support Videos

Manuals/User Guides