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.
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
Calculate Battery Life:
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? 
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 |
| Color (Wavelength/Max Current) | At the LED Module using 1ms pulses with 1% duty cycle | Per charge; Based on minimum power outputs |
| Blue (465nm/300mA) | 55mW | 2.3mWh |
| Green (525nm/300mA) | 15mW | 0.63mWh |
| Lime (550nm/500mA) | 22mW | 1.0mWh |
| Orange (620nm/250mA) | 24mW | 0.92mWh |
¹Power values are measured using pulsed stimulation (1 msec pulses)
Technical Specs and Data Sheets
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Manuals/User Guides