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图片源于供应商或网络,实物可能存在差异,请以实物为准

pl-21n31pq

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¥ 556.356235

10+

¥ 437.483880

¥ 4374.8388

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¥ 395.089498

¥ 9877.23745

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¥ 347.932751

¥ 173966.3755

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¥ 276.123764

¥ 276123.764

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产品参数

产品属性	属性值
商品目录	蜂鸣器
驱动方式	无源(外部驱动)
构造类型	压电式
工作电压	3V~28V
频率	2.5kHz
工作电流	15mA
声压(SPL)	90dB
直径	30mm
长度	-
宽度	-
高度	16mm
工作温度	-20℃~+70℃

PDF描述：压电蜂鸣器指示灯，内部驱动 12 V 12mA 3kHz 80dB @ 12V，30cm 通孔 PC 引脚

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select * from pdf where partno='pl-21n31pq' and brandshort='mallory sonalert' limit 1 [ RunTime:0.003014s ]
SHOW FULL COLUMNS FROM `stock_product_overview` [ RunTime:0.001163s ]
SELECT `memo` FROM `stock_product_overview` WHERE `icName` = 'pl-21n31pq' LIMIT 1 [ RunTime:0.000847s ]
SHOW FULL COLUMNS FROM `pdf` [ RunTime:0.001269s ]
SELECT `id`,`partno`,`note`,`note_cn` FROM `pdf` WHERE `partno` = 'pl-21n31pq' LIMIT 1 [ RunTime:0.000455s ]
SHOW FULL COLUMNS FROM `stock_pra_lib` [ RunTime:0.001464s ]
SELECT `pra` FROM `stock_pra_lib` WHERE ( ( `partno` = 'pl-21n31pq' OR `brand` LIKE 'mallory sonalert%' ) ) LIMIT 1 [ RunTime:0.001664s ]
SHOW FULL COLUMNS FROM `icreplace` [ RunTime:0.001238s ]
SELECT `r`.*,`b`.`brandshort`,`b`.`brandcn` FROM `icreplace` `r` LEFT JOIN `stock_brand` `b` ON `b`.`id`=`r`.`icbrandid` WHERE `r`.`partno` = 'pl-21n31pq' ORDER BY `r`.`id` DESC LIMIT 5 [ RunTime:0.000515s ]
SELECT `id`,`code`,`imgurl`,`minOrderPrice`,`partno`,`brand`,`package` FROM `stock` WHERE `categoryid` = 0 AND ( `partno` > 'pl-21n31pq' ) ORDER BY `partno` ASC LIMIT 8 [ RunTime:0.015536s ]
SELECT `id`,`code`,`imgurl`,`minOrderPrice`,`partno`,`brand`,`package` FROM `stock` WHERE `status` = 3 ORDER BY `partno` ASC LIMIT 8 [ RunTime:0.000801s ]

0.191061s

pl-21n31pq

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总价金额： ￥ 556.356235

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PDF描述： 压电 蜂鸣器 指示灯，内部驱动 12 V 12mA 3kHz 80dB @ 12V，30cm 通孔 PC 引脚

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总价金额：￥ 556.356235

PDF描述：压电蜂鸣器指示灯，内部驱动 12 V 12mA 3kHz 80dB @ 12V，30cm 通孔 PC 引脚