Door Bell 門鈴	Limit Switch 行程掣
Call Alarm System 警示系統	Micro Switch 微動掣
Alarm Bell 警鐘	Snap Switch 搖杆掣
Buzzer 蜂鳴器	Fuse Base & Puller
Multimeter 它錶	Hoist Push Button Switch
Cable Tie 扎帶	Push Button Switch 按鈕掣
Nail Clip 線碼	Foot Switch 腳踏掣
Cable Markers 穿線碼	Terminal Block 接線排
Spiral Wrapping Bands	Relay 繼電器
Insulated Terminal	Relay Socket 繼電器插座
Energy Saving Lamps 節能燈	Hour Meter
Push Button 按鈕	Time Switch 時間掣