| Brand | Cel |
|---|---|
| Model | Cel-284 |
| MPN | Cel-284 |
| Country/Region of Manufacture | United Kingdom |
Check the listing for details. CEL Instruments CEL-284 Acoustic Calibrator 114 dB 1kHz + Electrical O. Condition: Used. Listed at 89.99 USD. Humidity Range: 10–90%RH (±0.3 dB). Electrical Output: 100 mV RMS ±1 mV at 1 kHz. Battery: 1 x 9V (Not Included). Weight: 225g (0.5 lb) including battery. ✅ Low harmonic distortion (0.5%).