| 品牌 | lianhua68 |
|---|
| SPECIFICATION | |||||||
ULTRASonIC ANNUNCIATOR | |||||||
1 | Model No. | LDG41 | |||||
2 | Rated Voltage (Vrms) | 2.83 | |||||
3 | Operating Voltage (Vrms) | 20 Max | |||||
4 | *Resonant Frequency (Hz) | 22000±1000 | |||||
5 | Capacitance 120Hz (PF) | 140000±40% | |||||
6 | *Sound Output at 50cm(dB) | ≥90 | |||||
7 | Operating Temperature (℃) | -20～+70 | |||||
8 | Storage Temperature (℃) | -30～+80 | |||||
9 | Weight (g) | 6 | |||||
*Value applying at 2.83Vrms, 22KHz sine wave50cm | |||||||
Dimensions Unit: mm Tolerance: ±0.5mm Except Specified
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| Measurement The electrical characteristics shall be measured at 20 to 25 & relative humidity 55% max. | Freq. Response
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Drawing by | Checked by | Approved by | Date | ||||
