7V 580mAh Battery (built-in)

Dual 60mm fans deliver strong airflow

Robust Construction: The S2 helicopter boasts a durable design with high-strength

1 x Set of Installation Accessories

Size: 25×20×6mm

digital sound level meter 30 130 db a c zl82a 3 aaa or zl82b usb recharge __OfficeEquipment 7V 580mAh Battery (built-in)Key features Compact handheld meter measuring 30130 dB with A and C weighting options. It shows readings to 0. 1 dB with a noise accuracy of 1. 5 dB. Fast sampling is 125 ms for quick fluctuations and Slow is 1 second for steady averages. Frequency response covers 30 Hz to 8 kHz for typical environmental noise checks. Power & models Two model choices: ZL82A runs on 3AAA batteries and ZL82B uses USB charging while delivering the same measurement