| 摘要 |
PURPOSE:To enable the time set operations of a plurality at the front and to make small the controller by connecting a required number of electronic timers suitably. CONSTITUTION:One opening of the case 24 of square frame is covered with printed circuit boards 25, one end of the circuit boards 25 is projected to the back side of the case 24, the projected ends are taken as a plug 27 connected to the connector 26 suitably, and the opening 28 is provided for the front plate of the case 24. Further, in the circuit boards 25, the electronic circuit components 29 and time set operating ring 30 with scale are loaded, a part of the rotating operation section of the operating ring 30 is projected outside the case through the opening 28 so that the scale of the operating ring 30 can be externally observed through the opening 28. The timers 21 thus constituted are connected in series left and right, and the timers are incorporated by providing end plates 22, 23 at left and right ends. |
