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    Digital Timer Relay, 8 Pin, 24V DC/110-240V AC
    Picture of Digital Timer Relay, 8 Pin, 24V DC/110-240V AC
    Picture of Digital Timer Relay, 8 Pin, 24V DC/110-240V AC

    Digital Timer Relay, 8 Pin, 24V DC/110-240V AC

    4.8 out of 5 based on 12 reviews | Write a review
    $92.58
    Digital timer relay / countdown timer, on-delay timer, features timing setting range 0.01~9999 second / minute / hour, with supply voltages 85V-265V AC (110-240V AC) or 24V DC, 4-digit LED dual time display, easy to read, wide time delay range and high timing accuracy. 8-pin timer relay, available with 8-pin mounting socket for DIN Rail, easy to install.
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    SKU: ATO-TIMER-TH100
    30-day Returns
    Free Shipping
    Delivery date: 6-12 days

    Digital timer relay or time delay relay, on-delay timer relay, has timing setting range of 0.01~9999 sec / 0.01~9999 min / 0.01~9999 hrs, easy to read with 4-digit dual time display. High quality and accuracy digital timer relay / countdown timer is widely applied in the industrial automation field with power supply 24V DC or 85-265V AC.

    Specification

    Model ATO-TH100
    Mode of Operation On delay timer relay
    Supply Voltage (Optional) 85V-265V AC or 24V DC
    Output Mode (Optional) Mode 1: External connecting reset, one group pause delay output
    Mode 2: One group instantaneous and one group delay output
    Mode 3: One group suspension delay output
    Mode 4: Two groups sync delay output
    Time Setting Range 0.01~9999 second/minute/hour
    Display Mode 4-digit display
    Contact Capacity 220VAC/3A 28VDC/5A (Resistive Load)
    Power Comsuption ≤2W
    Mounting Type Panel Mount
    Dimensions External (W*H*D) 48*48*73mm
    Cut-Out (W*H) 45*45mm
    Accessary (Optional) 8-pin Mounting Socket
    Weight 1kg
    Operating Temperature -10 ~ 50℃
    Humidity ≤85% no caustic or magnetic interference

    Dimensions (Unit: mm)

    ATO-TH100 Digital Timer Relay Dimensions

    Connection Diagram & Output Operation Mode

    • Mode 1: External connecting reset, one group pause delay output

    Mode 1 Timer Relay Connection Diagram

    Timer Relay with External Reset Output Operation Mode

    • Mode 2: One group instantaneous and one group time delay output                           • Mode 3: One group suspension delay output

    Mode 2 Timer Relay Switch Connection Diagram Mode 3 Timer Relay Switch Output ConnectionMode 2& 3 Timer Relay Output Operation Mode

    • Mode 4: Two group sync time delay output

    Mode 4 Time Delay Relay ConnectionMode 4 Time Delay Relay Output Operation Mode

    Details

    110V-240V Digital Timer Relay Details

    Tips: How to select a timer relay?

    The selection of timer relay mainly focuses on delay mode and parameter. The following aspects should be considered when selecting a time delay relay.

    1. Selection of delay mode
    There are two types of timer relays, power-on delay or power-off delay, which should be selected according to the requirements of the control circuit. The reset time after the action should be longer than the inherent action time, so as to avoid misoperation or even no delay, which is especially important in the case of repeated delay circuits and frequent operations.

    2. Timer relay type selection
    For occasions with low requirements for delay time accuracy, generally use electromagnetic or air damping time delay relays with lower prices; otherwise, for high requirements on time delay accuracy, electronic time relays can be used.

    3. Coil voltage selection
    Select the voltage of the relay's attraction coil including 12VDC / 24VDC / 110VAC / 220VAC, etc., according to the voltage of the control circuit.

    4. Selection of power parameter changes
    Air damping or electric time relays are better than transistors for occasions with large power supply voltage fluctuations, and electric time relays are not suitable for occasions with large power frequency fluctuations, and air damping timer relay is not suitable for large temperature changes.

     

    See the video below for the use of ATO digital timer relay.

    How to Test a Time Delay Relay?

    When using time delay relays, they must be tested correctly in order to work properly. In this video, you are shown how to test a time delay relay using a multimeter, and how to use a timer to ensure the accuracy of the time delay relay.

    Electromagnetic Switches: Relays VS. Contactors

    In this video we will try to clear the confusion many people have between relays and contactors by showing you how to tell the difference based on five criteria: Definition, Capacity, Structure, Contacts and Applications.

    Relays vs Circuit Breakers: What’s the Difference

    In this video, we've described the difference between a relay and a circuit breaker as well as explaining their basic working and operation by means of animation. If you find this video helpful, please LIKE it and SHARE with your friends. Don't forget to check out the purchase links above if any featured items're of your interest.

    Timer relay and PLC timer program

    ATO timer relays have wide time setting and the operating voltages DC 12V, DC 24V, AC 220V are available. The 8-pin socket for DIN Rail mounting is also optional.

    Existing reviews of Digital Timer Relay, 8 Pin, 24V DC/110-240V AC
    Timer to cut off circuit power
    I need a timer that cuts off the circuit power after a delay. As I understand it, a timer with a delay-on function continues to supply power after the delay ends.
    From: Lagas | Date: 26/06/2026
    Was this review helpful? Yes No (0/0)
    ATO Responded
    The ATO-TIMER-TH100 can cut off power with a delay (connected to COM NC). What application are you using it for? Are there any specific requirements, such as installation method, instrument size, delay range, and operating power supply?
    Output Power and Output Voltage
    What is the output power of this product? I need a digital valve timer with an input voltage of 110V AC and an output voltage of 24V DC. What is its output voltage? My solenoid valve only operates on 24V DC. Will it be suitable?
    From: Reland | Date: 10/08/2025
    Was this review helpful? Yes No (0/0)
    ATO Responded
    This timer relay does not have an output voltage, but has relay outputs with a contact capacity of 220VAC/3A and 28VDC/5A (Resistive Load). This means you can only connect an external 24VDC voltage through the contacts to the solenoid valve. However, the solenoid valve coil current should not exceed 28VDC/3A. If your solenoid valve operates frequently, we recommend adding an intermediate relay.
    Timer relay's timing function
    Does this 8-pin digital timer relay support the control function at a specific time point? For example, can it achieve power off at 11 pm and power on at 4 am?
    From: Oralun | Date: 29/06/2025
    Was this review helpful? Yes No (0/0)
    ATO Responded
    This time relay cannot achieve the time control function. If you can describe the specific application scenario and control requirements in detail, we will evaluate and recommend suitable relay products for you.
    Multi-voltage compatible
    The impressive digital timing relay not only supports 24V DC, but also adapts to a wide voltage range of 110-240V AC. This flexibility makes it easy to cope in a variety of industrial and domestic scenarios, making it a capable assistant in the field of electrical control.
    From: Mrthos | Date: 23/11/2023
    Was this review helpful? Yes No (0/0)
    Smaller than i expected
    The timer relay looked great, but smaller package than the illustration looked like.
    From: Leo | Date: 24/10/2023
    Was this review helpful? Yes No (0/0)
    Nice digital timer relay
    It has been five months since I bought this digital timer relay.There is no problem using this relay in hot weather. It's light and easy for me to carry.
    From: Gammon | Date: 08/11/2022
    Was this review helpful? Yes No (0/0)
    Very effective and durable digital timer relay
    I work in automation and need a digital timer relay. This is also the first time I buy a relay in ATO. This one is definitely the best one I have used and reliable most importantly.
    From: Shaun | Date: 21/10/2022
    Was this review helpful? Yes No (0/0)
    Timer relay with full functionality
    This timer relay is simple and can be connected to a simple loop timer function. Cheap price. It is very easy to connect and program.
    From: Ignacio | Date: 29/04/2022
    Was this review helpful? Yes No (0/0)
    For my project setup...
    For my project setup, I want to activate one actuator, then the next actuator activates a specific amount of time later. Do you know of a way to hook up my system like this?
    From: Christopher | Date: 12/10/2020
    Was this review helpful? Yes No (0/0)
    ATO Responded
    Yes, you can just use our digital timer relay to realize your setup.
    Timer relay with normally closed contacts
    For timer relay of model: ATO-TIMER-TH100, I need on normally closed contacts then open when timer goes to zero . Can it fulfill that?
    From: Steve | Date: 03/08/2020
    Was this review helpful? Yes No (0/0)
    ATO Responded
    Yes, this time relay has this function >>>> On normally closed contacts then open when timer goes to zero.
    And If you need a group of normally closed contacts, you can choose mode 2 option, but if you need 2 groups of normally closed contacts, you can choose mode 4.
    Timer relay operation
    Can your timer display count down and time delay under operation?
    From: Paul | Date: 06/04/2020
    Was this review helpful? Yes No (0/0)
    ATO Responded
    Yes, our timer can display delay time and also can display the count down time during the operation, and also you can set how long the output remains after the delay time reaches!
    Which model of timer relay should we choose?
    Hello, which model of timer relay should we choose for a greenhouse? We live in Europe (220V) and we would like to switch on a humidifier (220V) every 5 Minutes for one minute and a fan in a similar cycle.
    From: Stephen | Date: 31/10/2019
    Was this review helpful? Yes No (0/0)
    ATO Responded
    Hello, my dear friend. The model ATO-TIMER-TH100 timer relay is suitable for your required function, as you can set both delay time (SV) and an output delay time (T).
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