Pre-built adjustable cyclic (i.e. repeating ON-OFF-ON-OFF) timer board modules with Triac output for controlling resistive ac mains loads (e.g. lamps, resistors, etc). Ideal for use in automation circuits, flashing or traffic lights, models, outdoor / indoor (hydroponics) crop growing, etc.
The user can independently set both the ON time and OFF time periods using two onboard trimmers in the range of 50 seconds and 30 minutes duration (see Order Code CI021 for 0.3 to 60 seconds version).
When powered up, the timer will activate the triac for the pre-set ON time. Once this time period has elapsed, the triac with turn off for pre-set OFF time. This process will then be repeated with the triac turning on and off for the same time periods until the timers power is disconnected.
This module is NOT suitable for use with inductive loads (like transformers, neon lamps, halogen lamps with transformer, motors, pumps, etc).
This product operates at potentially lethal mains voltage. Installation, testing and commissioning should only be attempted by competent persons, or under supervision of someone fully experienced in this field. Many areas of the assembly (including heatsinks) may operate at mains voltage. It must be fitted into a suitable isolating enclosure to avoid injury or death. This product is not suitable for children. more