大华DHC累时器。主要规格有超小型自带电源累时器LCD显示型号有：无电压输入，DHC3L-1DHC3L-2DHC3L-3DHC3L-4DHC3L-5DHC3L-6。直流电压输入（D***～30V）DHC3L-1VDHC3L-2VDHC3L-3VDHC3L-4VDHC3L-5VDHC3L-6V。交流电压输入（AC/DC110～240V）DHC3L-1ADHC3L-2ADHC3L-3ADHC3L-4ADHC3L-5ADHC3L-6A。导轨安装累时器型号DHC15L。LED显示累时器型号有DHC6J-L，DHC9J-L。LED显示累时器DH48L。大华DHC可编程控制器。主要型号有：DIN标准导轨安装DHC15A,DHC20,DHC16-1a，DHC16-2a,DHC8A,DHC12,DHC8,DHC8A.可编程经纬度控制器DHC15B-N.)