RHS Stim/Recording Controller

Intan RHS stim/recording controller

The Intan RHS stim/recording controller (Part #M4200) allows users to record electrophysiology signals and perform electrical stimulation across 128 channels using small, affordable hardware and free, open-source software. This device connects to a host computer via a USB 2.0 cable. Small 16- or 32-channel RHS headstages connect to the stim/recording controller via thin, flexible all-digital Stim SPI cables.

Note: The RHS stim/recording system cannot use RHD recording headstages or RHD interface cables. The RHD and RHS systems are not compatible.


  • Supports all Intan RHS headstages with sampling rates of 20, 25, or 30 kS/s.
  • All headstage channels can independently produce stimulation currents from ±10 nA to ±2.5 mA with ±7V compliance.
  • Biphasic or triphasic stimulation pulses are generated with timing resolution as fine as 33 μs.
  • Stimulation pulses are pre-configured in software and triggered by keypresses or digital inputs.
  • Independent ground isolation on each headstage port to reduce noise from ground loops.
  • Software supports in situ electrode impedance measurement.
  • Two analog input ports and two analog output ports with ±10V range.
  • Two digital input ports and two digital output ports.
  • Analog and digital inputs are recorded in sync with amplifier waveforms; may be used to trigger stimulation pulses or to control automated episodic recording sessions.
  • Optional I/O expander increases the number of auxiliary ports to 8 analog in, 8 analog out, 16 digital in, and 16 digital out.
  • May be mounted in standard 19" rack (1U) or operated from a bench top.

If you purchased an RHS stim/recording controller from Intan before May 2021, please read the following advisory.

Intan RHS stim/recording controller front panel

Intan RHS stim/recording controller back panel


Documents and Software