40 On/40 Off programmable timer.
Each day can have it’s own times.
Ideal to sound your siren for the indication of shift start/end, tea breaks etc.
Used in schools to automatically ring your bell for lesson changes.
* All ranges quoted on this site are approximations in an open field on a still day. Please check the duty cycle (the amount of time a siren can sound before it needs a “rest”) before placing your order.