| Tech/Talk ECU | Tech/Scan 8 Plus ECU | Tech/Speak ECU | Tech/Scan 32 Plus ECU | |
| Direct Select | Yes | Yes | Yes | Yes |
| Message Cells | 8 | 8 | 32 | 32 |
| Levels | 6 | 8 | 6 | 6 |
| Sequenced Messages | ||||
| Scanning | Yes | Yes | ||
| Auditory Prompts | Yes | Yes | ||
| Environmental Controls | IR & RF | IR & RF | IR & RF | IR & RF |
| Total Recording Time | up to 7.2 min. | up to 26.1 min. | up to 14.4 min. | up to 29.4 min. |
| Smart Overlay System | ||||
| External Flash | ||||
| Rechargeable Battery | Yes | Yes | Yes | Yes |
| Overall Size | 13.5x8x3 | 13.5x8x3 | 13.5x8x3 | 13.5x8x3 |
| Message Cell Dimensions | 2.75" | 2.75" | 1.25" | 1.25" |
| Weight | 4 lb. | 4 lb. | 4 lb. | 4 lb. |
| Price | $875 - $1,235 | $2,250 | $1,095 - $1,410 | $2,450 |