ABS Ultrasonic Transducer Speaker 25KHZ Piezo Horn Loudspeaker for Rat Repellent and Pest Control

After being worked in a chamber at +70±2℃ for 2h and then being placed in natural condition for 2h,sounder shall be measured.

After test,the transducr S.P.L.difference shall be within ±10dB,and the appearance not exist any change to be harmful to normal operation(e.g.cracks,rusts,damages and especially distortion)

First being worked in a chamber at -30 ± 2 ℃ for 2h and then being planed in a chamber at -30±2℃ for16h,finally being placed in natural condition for2h,sounder shall be measured.

After being placed in a chamber with 90 to 95%R.H.at+40 ± 2 ℃ for 48h and then being placed in natural condition for 2h,sounder shall be measured.

Sounder shall be measured after being applied vibration of amplitude of 0.75mm with 10 to30 to10Hz band of vibration frequency to each of 3 perpendicular directions for 1hour.

Sounder shall be measured after freely falling the products from 0.8m high to the wooden board with three sides per time.

Sounder shall be measured after the test of acceleration 100 ± 10m/s²,impulse lasting time 16ms,repeat frequency 1~3/min and time 1000±10.

Lead terminals are immersed in rosin for 3 seconds and then immersed in solder bath at +250 ± 5 ℃ for 3 ± 0.5 seconds,terminals should be covered with the clean solder.

The force 10 seconds of 1N is applied to each terminal in axial direction.no looseness and falling off.