About Time Mark

Who We Are

Since 1972, Time Mark has been proudly engineering, manufacturing and assembling our quality products from our manufacturing facility in Tulsa, Oklahoma.

Time Mark Corporation products are distributed throughout the United States and exported to an expanding international customer base. Standard catalog products are marketed through a combination of local distributors, Time Mark representatives, and direct sales personnel. Time Mark products are marketed under two trade names: “Time Mark”, which includes the basic lines of industrial controls, and “Signaline”, which is a recognized brand name for all of our timing devices.

Custom/OEM Manufacturing

Don’t see what you need? Just ask! If we do not already build a device with the voltage, frequency or packaging configurations you require, we will be happy to design one for you.

Time Mark Corporation is actively engaged in the design, manufacturing, and production of special control devices under private label to OEM customers. Some are variations of existing Time Mark products while others have unique designs.

You can call us during normal business hours to speak to one of our technical specialists or fill out our Contact Us form and tell us more about your project. Within 24 hours a Time Mark Representative will contact you about your project to discuss further details. Click HERE to go to the Contact Us page.

What We Do

3-Phase Monitors – Time Mark is a world leader in the design and manufacturing of 3-phase sensing devices. Included in the product line are reverse phase detectors, phase loss sensors, and phase unbalance sensors.

Time Delay Relays – A full line of industry standard time delay relays are manufactured under the “Signaline” trade name.

Alternating Relays – For 2, 3 or 4 alternators to equalize run times of multiple loads.

Current Monitors – Both single-phase and 3-phase models are available to sense over and under current conditions. Current transformers are also available.

Voltage Sensors – AC and DC models are available to sense over voltage, under voltage and voltage band.

Pump/Motor Load Controls – Submersible pump load sensors, sewage lift station controls, liquid level controls and sensors, and motor load monitors.

Special Controls – Time Mark makes a variety of special controls including capacitor trip devices, power supplies and power factor regulators, “two hand” safety controls and many more.


Time Mark Corporation offers a 5-year unconditional warranty on all of our 3-Phase Monitors and socket mounted products. All other standard products have a 1-year warranty. See Time Mark’s Terms and Conditions of Sales for more detailed information.