Zhejiang Geya Electric Co., Ltd
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Multi functional time relay GRT8-M 12v 24V 220V controller
Multi functional time relay GRT8-M 12v 24V 220V controller
Product details

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■ Application

-Multi functional time relay can be used for industrial equipment, lighting control, heating element control, motor, fan control

It has 10 delay modes, covering a delay range of 0.1 seconds to 10 days.

■ Characteristics

-10 delay modes: -5 delay modes controlled by power supply

-4 delay modes controlled by signals

-1 pulse conversion mode

-Ultra wide delay range, adjustable from 0.1 seconds to 10 days (10 levels).

-Available in AC/DC 12V-240V ultra wide operating voltage specifications.

-The working status of the relay is indicated by LED indicator lights.

-Ultra small size, only 18mm width, 35mm card rail installation.



Product model and its meaning

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Main technical parameters


GRT8-M1 GRT8-M2
function A,B,C,D,E,F,G,H,I,J
power terminal A1-A2
Rated control power supply voltage AC/DC 12-240V(50-60Hz)
Power consumption AC 0.09-3VA/DC 0.05-1.7W
Rated control power supply voltage AC 220V(50-60Hz)
Power consumption

Allowable fluctuation range of power supply -15%;+ 10%
Power indicator light Green LED
Delay range 0.1 seconds to 10 days, normally open, normally closed
Setting method knob
Setting accuracy 10%
repeatability 0.2%
Temperature fluctuation error 0.05%/℃,at=20℃(0.05%℉,at=68℉)
Output contact parameters 1 set of conversion contacts 2 sets of conversion contacts
1×16A(AC1) 2×16A(AC1)
250VAC/24VDC
Minimum switching power 500mW
Output relay indication red led
mechanical life 1×10
Electrical lifespan (resistive load) 1×10 5
Reset time Maximum 200ms
Ambient Temperature -20℃ ~ +55℃
Storage and transportation environment temperature -35℃ ~ +75℃
Installation method 35mm card rail installation
protection grade IP20
Installation position arbitrary
Installation altitude ≤ 2000 meters
pollution degree 2
Wiring ability 1 × 2.5mm or 2 × 1.5mm
External dimensions 90mm×18mm×64mm
weight W240-62g,A230-60g W240- 82g,A230-81g
Compliant with standards GB14048.5,IEC60947-5-1,EN 61812-1


function diagram

Delay setting

Outline and dimensions of wiring diagram (mm)

A: Power on delay

When relay Un is powered on, the relay begins to delay, and after a delay of t, the output contacts close. relay

After the power is cut off, the output contact is disconnected, and the S control signal is invalid in this functional mode.

多功能型时间继电器

B: off delay

When the relay Un is powered on, the output contact of the relay immediately closes, causing a delay. After a delay of t, the output is delayed

If the contact is disconnected, and the delay time t has not reached the point where the relay Un loses power, the output contact will be disconnected, and S will control it

The signal is invalid in this functional mode.

多功能型时间继电器

C: Loop delay (starting from OFF)

When relay Un is powered on, the relay begins to delay, and after a delay of t, the output contacts close. At the same time

After a delay time t, the relay output contact opens, and this cycle continues until the relay Un

Power loss, the S control signal is invalid in this functional mode.

多功能型时间继电器

D: Loop delay (ON start)

When the relay Un is powered on, it closes and begins to delay. After a delay of t, the output contact opens

After a delay time t, the relay output contact closes, and this cycle continues until the relay is delayed

Un loses power, S control signal is invalid in this functional mode.

多功能型时间继电器

E: Delay disconnection (starting from triggering the falling edge of S)

When the relay Un is in the powered state, when the S control terminal is turned on, the relay closes and the S control terminal

When disconnected, the relay starts to delay, and after a delay of t, the output contact opens. During the delay of t, the S control terminal

Reconnect, reset delay t to zero, and then delay again.

多功能型时间继电器

F: Delay disconnection (starting from S rising edge triggering)

When the relay Un is in the powered state, when the S control terminal is turned on, the relay closes, and at the same time, the relay

Start delay, after delay t, the output contact will disconnect, and during the delay t process, the S control terminal will reconnect. Delay t will protect

Continue to delay without change.

多功能型时间继电器

G: S falling edge triggers closure, delayed disconnection

When the relay Un is in the powered state and the S control terminal is disconnected, the relay closes, and at the same time, the relay

Start the delay, and after a delay of t, the output contact will disconnect. During the delay of t, the S control terminal will reconnect and disconnect, causing a delay

Keep t unchanged and continue to delay.

多功能型时间继电器

H: Connection and disconnection delay

When the relay Un is in the powered state and the S control terminal is turned on, the relay starts to delay. After a delay of t

The output contact is closed, and when the S control terminal is disconnected, the relay starts to delay. After a delay of t, the output contact opens.

多功能型时间继电器

I: Pulse conversion

When the relay Un is in the powered state and the S control terminal is connected, the relay output contact state transitions.

多功能型时间继电器

J: pulse output

After the relay Un is powered on, the relay starts to delay. After the delay time t, the output contact of the relay closes for 0.5s

Later disconnect.


Delay setting

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Wiring diagram

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Appearance and size

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