B-Alert 24 Channel Wireless EEG

The B-Alert X24 is a powerful, comprehensive system for mobile neurophysiological data acquisition and analysis. Comfortable, lightweight headgear delivers real-time EEG for quantitative analyses, LORETA, BCI, neurofeedback training, single-trial ERPs, and the validated B-Alert Cognitive State Metrics. The system includes the External Syncing Unit – MultiChannel (ESU-MC) for millisecond time synchronization with other systems. From biomarker development to neurorehabilitation applications, the B-Alert X24 is the most robust medical-grade, wireless-EEG system available.

Product Features:

  • 20 channels of medical-grade EEG, plus 4 auxiliary channel for ECG, EMG, or EOG
  • (24 Channels @ 256Hz)
  • Real-time delivery of the validated B-Alert Cognitive State Metrics for engagement, distraction, drowsiness, and stress
  • Real-time Workload Metric
  • Comfortable and non-intrusive; sets up in about 10 minutes
  • Automated wireless impedance checks
  • Enhanced ESU-MC Bluetooth wireless range up to 20 meters
  • 8+ hour rechargeable battery life
  • On-board accelerometer quantifies head movement & position
  • Data quality monitoring and feedback
  • Real-time access to Raw Data, Decontaminated Data, and Cognitive State Metrics
  • Multiple options for data synchronization
  • Sizing to fit adolescent through adult heads
  • SDK fully compatible with MatLab, EEGLab, BCI2000, qEEG, and multiple neurofeedback packages

Product Specifications:

Channels 20 EEG with fixed gain referenced to linked mastoids
4 auxiliary differential channels
Sampling rate 256 samples/second
Dynamic range Fixed gain ±1,000 ?V
Resolution 16 bit, CMRR 105 dB
Bandpass characteristics 0.1Hz HPF, 100Hz 5th order LPF
Input impedance 100 G?
Noise ~ +1.5 ?V @ 10 Hz and 50 k? impedance
Head movement/position Angles obtained with 3-axis 12-bit accelerometer
RF Band 2.4 to 2.48 GHz (ISM band)
Transmission mode Bi-Directional with B-Alert BT – USB dongle
Data transmission range ~ 10 meters, line of sight with onboard antenna
Transmission power Bluetooth Class 2 +4dBm; ESU-MC Bluetooth Class 1
System power consumption ~ 70 mA @ 3.7 V
Battery capacity Standard 2 x Li-ION batteries – 460 mAH, 8-hours of use
Optional 4 x Li-ION batteries – 920 mAH, 15-hours of use
Battery charging Internally charged with custom cable and USB wall charger
On-line impedance monitoring Initiated by host computer using bi-directional link
Head unit dimensions Size: 5’(L) x 2.25” (W) x 1” (H); Weight: 0.11 kg with standard battery
User control On/Off
Indicator LEDs Green
Compatibility Windows 7 and XP, PC with 2.0 GHz or higher processor & 1 GB of RAM
Estimated file size per minute ~ 45 KB/Min/channel
Sensor Headset & Accessories
Single-trial ERP configuration
Medical qEEG
Fz, F1, F2, F3, F4, Cz, C1, C2, C3, C4, CPz, Pz, P1, P2, P3, P4, POz, Oz, O1, O2
Fz, Fp1, Fp2, F3, F4, F7, F8, Cz, C3, C4, Pz, P3, P4, POz, T3, T4, T5, T6, O1, O2
Sensor strip sizes Ships with small & medium; also available with x-small and/or large
Electrode cream Highly conductive electrolytes and preservatives in non-ionic, hypoallergenic base, buffered to skin p

B-Alert X24 Electrode Sites

Real-time GUI displays B-Alert Cognitive State gauges with timeline and EEG spectrograms

Optimized for single-trial ERP applications

The ESU-MC features serial and parallel
ports for precision syncing


B-Alert technology featured in
New Scientist Magazine Cover Story


Exclusive distributor Australia & NZ