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Multifunction Time Relay GRT8-M1

Multifunction Time Relay GRT8-M1 can be used for electrical appliances, control of lights, heating, motors, pumps, and fans.



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SKU GRT8-M1 Category



GEYA multifunction time relay is a smart relay for easy adjustment of the control signals, with multi-time range, multi-functions, and multi-voltage input built-in.

GEYA multifunction time relay provides 10-time ranges and 10 functions for the customer’s purpose to control an event that is based on time.

It also has a universal input voltage version for AC/DC12-240V that can be a suitable different power supply.

GEYA multifunction time relay offers high functionality on a small footprint.

Due to the flat front panel, an easy-to-read LED display as well as operating elements adjustable by standard tools, the configuration is particularly straightforward.


Multifunction time relay can be used for electrical appliances, control of lights, heating, motors, pumps, and fans (10 functions, 10-time ranges, multi-voltage).

Function Features

  • 10 functions:

– 5-time functions controlled by supply voltage

– 4-time functions controlled by control input

– 1 function of latching relay

  • Comfortable and well-arranged function and time-range set by rotary switches.
  • Time scale 0.1 s – 10 days divided into 10 ranges.
  • Relay status is indicated by LED.
  • 1-MODULE, DIN rail mounting.

1.GRT8-M1 12v control 220V wiring diagram

2.GRT8-M1+GYHC-63 wiring diagram

3.sensor NPN+GRT8-M1 wiring diagram

4.sensor PNP+GRT8-M1 wiring diagram

Technical parameters GRT8-M1 GRT8-M2
Function A,B,C,D,E,F,G,H,I,J
Supply terminals A1-A2
Voltage range AC/DC 12-240V(50-60Hz)
Burden AC 0.09-3VA/DC 0.05-1.7W
Voltage range AC 230V(50-60Hz)
Power input AC max.6VA/1.3W AC max.6VA/1.9W
Supply voltage tolerance -15%;+10%
Supply indication green LED
Time Ranges 0.1s-10days,ON,OFF
Time setting potentiometer
Time deviation 10%-mechanical setting
Repeat accuracy 0.2%-set value stability
Temperature coefficient 0.05%/℃,at=20℃(0.05%℉,at=68℉)
Output 1×SPDT 2×SPDT
Current rating 16A(AC1)
Switching voltage 250VAC/24VDC
Min. breaking capacity DC 500mW
Output indication red LED
Mechanical life 1×107
Electrical life(AC1) 1×105
Reset time max.200ms
Operating temperature -20℃ to+55℃(-4℉to131℉)
Storage temperature -35℃ to+75℃(-22℉to158℉)
Mounting/DIN rail Din rail EN/IEC 60715
Protection degree IP40 for front panel/IP20 terminals
Operating position any
Overvoltage category III.
Pollution degree 2
Max.cable size(mm 2) solid wire max.1×2.5or 2×1.5/with sleeve max.1×2.5(AWG 12)
Dimensions 90×18×64mm
Weight 1×SPDT:W240-63g,A230-62g
Standards EN 61812-1,IEC6947-5-1

GEYA GRT8-M Multifunction Time Relay Introduction

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