| Manufacturer | VELLEMAN |
| Type of circuit | do-it-yourself kit |
| Manufacturer series | WHADDA |
| Symbol | Board dimensions | Kind of circuit | Power supply | Features | Usup | Battery/ rechargeable battery | Application | Standard equipment | Usup | Number of diodes |
|---|---|---|---|---|---|---|---|---|---|---|
| [mm] | [V DC] | [V AC] | ||||||||
| VEL-WSAH1803 | 30x44 | microphone preamplifier | - | - | 10...30 | - | for audio application development, amplification acoustic signals | - | - | - |
| VEL-WSAH194 | 310x45x86 | digital FM radio | battery 9V x1 | autosearch station | - | none | for audio application development | - | - | - |
| VEL-WSAH195 | 77x60 | voice recording / playback module | battery 9V x1 | recording time 30...90s; built-in microphone | 9...12 | none | for audio application development | speaker | - | - |
| VEL-WSAH4304 | 37x68 | mono level indicator | - | - | 10...15 | - | for audio application development | - | - | 10 |
| VEL-WSAH4401 | 75x75 | acoustic generator | battery 9V x1 | - | 8...10 | none | for audio application development | - | - | - |
| VEL-WSAK8118 | 60x40x129 | ultrasonic detector | battery AA 1,5V x3 | - | - | none | for audio application development, detection of machine faults | - | - | - |
| VEL-WSMI7000 | 60x53 | signal tracer/injector | - | - | 9...12 | - | for audio application development | - | 7...9 | - |
| VEL-WSAH115 | 3.5x7.5x15.5 | mono level indicator | battery CR2032 3V x1 | built-in microphone | - | none | for audio application development | - | - | 5 |
| VEL-WSAH113 | 40x60 | sound effects generator | battery 9V x1 | simulates signals: police siren, fire siren, ambulance sirens, laser gun | - | none | for audio application development | speaker; switch | - | - |
| VEL-WSAH105 | 40x56 | signal generator | battery 9V x1 | - | - | none | for audio application development | - | - | - |