... which not only has the independent power supply switch,but also a pair of lamp status indicator. ... when received signal.Descriptions:1.Camera wireless remote switch W01/02/03/04/05/06 use the ... ,the transmitter and the receiver set four digit switch codes separately,and supports 15 groups to corresspond ... the professional photography. WX-2001 Wireless Remote Switch For CANON:450D/400D/350D/300D