什么是 A21 灯泡
A21 灯泡是一种灯泡,常用于 家用照明应用.之所以命名为 A21,是因为它的直径为八分之二十一英寸,约合 2.625 英寸。这种灯泡的特点是它的梨形设计,类似于 A19 燈膽.A21 灯泡通常用于各种家用灯具,如台灯、吊扇和壁灯。
也许您感兴趣的是
- Ceiling-mounted PIR occupancy sensor with dry-contact relay output
- 12/24VDC or 12/24VAC low-voltage supply
- COM, NO, and NC isolated relay contacts for EMS, HVAC, and building control inputs
- Low-voltage DC recessed ceiling-mounted microwave motion sensor switch
- 12 VDC / 24 VDC input with 10-30 VDC range
- 10A max work current with adjustable time delay, Lux threshold, and sensitivity
- Higher-load recessed ceiling-mounted microwave motion sensor switch
- 100-265 VAC line-voltage input, 10A model
- 5.8 GHz microwave sensing with adjustable time delay, Lux threshold, and sensitivity
- Recessed ceiling-mounted microwave motion sensor switch
- 100-265 VAC line-voltage input, 5A model
- 5.8 GHz microwave sensing with adjustable time delay, Lux threshold, and sensitivity
- Ceiling-mounted RZ037 PIR occupancy sensor dimmer for 220V power
- 3A maximum working current with 660W rated load
- LUX button controls light-sensor ON/OFF and user-set dimming brightness
- Ceiling-mounted RZ037 PIR occupancy sensor dimmer for 110V power
- 3A maximum working current with 330W rated load
- LUX button controls light-sensor ON/OFF and user-set dimming brightness
- Low-voltage DC ceiling-mounted microwave motion sensor switch
- 12 VDC / 24 VDC input with 10-30 VDC range
- 10A max work current with adjustable time delay, Lux threshold, and sensitivity
- Higher-load ceiling-mounted microwave motion sensor switch
- 100-265 VAC line-voltage input, 10A model
- 5.8 GHz microwave sensing with adjustable time delay, Lux threshold, and sensitivity
- Ceiling-mounted microwave motion sensor switch
- 100-265 VAC line-voltage input, 5A model
- 5.8 GHz microwave sensing with adjustable time delay, Lux threshold, and sensitivity
- Low-voltage DC recessed ceiling mount PIR motion sensor switch
- 12 VDC / 24 VDC input with 10-30 VDC range
- Max work current 10A with adjustable time delay, Lux threshold, and sensitivity
- Higher-load recessed ceiling mount PIR motion sensor switch
- 100-265 VAC line-voltage input, 10A model
- 360-degree detection with adjustable time delay, Lux threshold, and sensitivity
- Recessed ceiling mount PIR motion sensor switch
- 100-265 VAC line-voltage input, 5A model
- 360-degree detection with adjustable time delay, Lux threshold, and sensitivity
- Wireless switch and receiver kit for indoor ON/OFF lighting control
- 100-230VAC, 50/60Hz receiver with 5A rated current
- CR2032-powered wireless switch with 2.4GHz communication
- 占用(自動開/自動關)
- 12–24V 直流(10–30VDC),最大 10A
- 360° 覆蓋範圍,直徑 8–12 米
- 延遲時間 15 秒–30 分鐘
- 光感測器關/15/25/35 Lux
- 高/低感度
- 自动开启/自动关闭占用模式
- 100–265V交流,10A(需要中性線)
- 360° 覆蓋範圍;8–12 米探測直徑
- 時間延遲 15 秒–30 分鐘;Lux OFF/15/25/35;感度 高/低
- 自动开启/自动关闭占用模式
- 100–265V AC,5A(需要中性線)
- 360° 覆蓋範圍;8–12 米探測直徑
- 時間延遲 15 秒–30 分鐘;Lux OFF/15/25/35;感度 高/低
A21 灯泡的一个显著特点是能够产生强烈而明亮的照明。与 A19 等较小的灯泡相比,A21 灯泡的设计可容纳更高的功率,从而产生更高的光输出。因此,A21 灯泡适用于需要照明的房间或区域。 充足的照明.
在兼容性方面,A21 灯泡采用标准中型灯泡底座,适用于大多数灯具。它的光束角度为 360 度,可提供全方位照明。不过,需要注意的是,虽然 A21 灯泡能产生强烈的光线,但它不能像 A19 灯泡那样充满整个空间。
此外,A21 灯泡尺寸较大,有助于更有效地散热,因此适合 LED 灯使用。这一点尤为重要,因为过多的热量会损坏 LED 灯泡的内部电子元件。不过,值得考虑的是,与 A19 等较小的灯泡相比,A21 灯泡往往会消耗更多的能源,因此在选择这两种灯泡时,能源效率可能是一个考虑因素。


















