Delayed Start (Delay on Make) Timer—This function allows you to set how long it takes for the relay to turn on after input voltage is applied. For example, a drill starts pumping lubricant immediately, but it does not start rotating until the set time has elapsed.

Delayed Switch Off (Delay on Break) Timer—This function uses a switch instead of input voltage. When the switch is turned off, the relay remains on for a programmed amount of time before turning off. For example, a projector’s light is turned off with a switch, but its cooling fan continues to run for a set time.

Delayed Switch-On with Delayed Switch-Off Timer—This function uses a switch instead of input voltage. It allows you to set how long the relay takes to turn on after a switch is turned on, and how long it will stay on after the switch is turned off. For example, a furnace turns on, but the fan doesn’t start pushing air through the vents until it has been heated. When the furnace turns off, the fan keeps blowing to circulate all the hot air.

Delayed-Pulse Timer—This function uses input voltage to turn on the relay for a brief period after a preset time. For example, a light flashes a few seconds after a door closes.

Interval Timer—This function uses input voltage to turn on the relay for a programmed amount of time. For example, when a part moving down a conveyor reaches a certain location, a cleaning spray comes on for a set time.

Interval Switch-Off Timer—This function requires a switch to activate the relay, which stays off for the programmed amount of time. For example, lights in a storage room are turned on with a switch and stay on for a set time before turning off.

Switch on (Single Shot) Timer—This function requires a switch to activate the relay, which stays on for the programmed amount of time. For example, lights in a storage room are turned on with a switch and stay on for a set time before turning off.

Repeat-Cycle Timer—This function starts with an on cycle and then alternates between an on cycle and off cycle of equal durations until input voltage is removed. A common example would be a flashing light.

Start-Off Repeat Cycle Timer—This function starts with an off cycle and alternates between an on cycle and off cycle of equal durations until input voltage is removed. A common example would be a flashing light.

Switch Fixed On/Off Timer—This function requires a switch to activate the timing function instead of the input voltage (which is applied the entire time). It keeps the relay on whenever the switch is closed; it will only turn off if the switch is open.

Asymmetrical-Repeat-Cycle Timer—This function switches the relay on and alternates between different durations of on and off for as long as input voltage is applied. For example, a sprinkler system sprays in short bursts followed by longer rest periods, on and off until input voltage is removed.

Switch-On Asymmetrical Repeat Cycle Timer—This function switches the relay on and alternates between different durations of on and off for as long as input voltage is applied. It requires a switch to activate the timing function instead of the input voltage that’s being applied the entire time. You could use this function to turn on an electric motor for a short period and then turn it off for a longer rest period, repeating that pattern until the switch is turned off.