2 x 2700mAh ER14505 Li-SOCl2 replaceable batteries
Battery life (10 minutes interval):
More than 4 years (Fast Time Frequency Adjustment mode disabled)
More than 1.5 years (Quick Time Frequency Adjustment mode on)
NFC enabled
IP30 degree of protection
Measuring range: 30 dBA ~ 120 dBA, 35 dBC ~ 120 dBC
Unit of measurement: SPL actual, Lea, Lmax
Frequency adjustment: A and C frequency adjustment (software switchable)
Time Frequency Adjust: Fast Frequency Adjust
https://www.milesight.com/iot/product/lorawan-sensor/ws302
