Rat preamplifiers for the 4-channel system come in multiple configurations:
- 8407-2BIO: 2 Biosensor channels only
- 8407-SL-2BIO: 1 EEG/1 EMG/2 Biosensor for Sleep
- 8407-SL: 2 EEG/1 EMG/1 Biosensor for Sleep
- 8407-SL-AXL: 2 EEG/1 EMG/1 Accelerometer for Sleep
- 8407-SE: 2 EEG/1 EMG/1 Biosensor for Seizure
- 8407-SE-AXL: 2 EEG/1 EMG/1 Accelerometer for Seizure
- 8407-SE2-2BIO: 2 EEG/2 Biosensor for Seizure
- 8407-SE3: 3 EEG/1 Biosensor for Seizure
- 8407-SE3-AXL: 3 EEG/1 Accelerometer for Seizure
- 8407-SE31M: 3 EEG/1 EMG for Seizure
- 8407-SE4: 4 EEG for Seizure
The SL configurations have EEG channels with 0.5 Hz high-pass filters; the other configurations have EEG channels with 1.0 Hz high-pass filters.
Note: An 8428 cable is required for the 4 EEG configuration.