Aurora GRT8-M1 Timer Relay Functions, Settings, and Manual

Preface: This article covers some of the technical details of the GRT8-M1 relay used in the Aurora series Lasers

GRT8-M1 located in the top of the Aurora, next to the Main Breaker

Part Number Explained:

We use the GRT8-M1 with is a SPDT Timer off relay with 120v Control Voltage so the full part number would be GRT8-M1/W240

Red Knob Settings:

Knob 1: 1s

Knob 2: 50pct

Knob 3: E Mode

Wiring from Aurora Schematics:

Aurora Series Wiring Diagram v8.4

Tracing Wires Back to Sources or Devices:

Notes About Relay Function:

Reference Links:

https://www.geya.net/product/multifunction-time-relay-grt8-m1/

https://www.geya.net/wp-content/uploads/2021/05/GRT8-M-Instruction-Manual.pdf

• Related Articles

• Aurora Series Unified User's Manual

  Please see the manuals for both Aurora series V1 and Aurora series V2 attached below

• ThunderBolt Unified User's Manual

  Please see the manual for the ThunderBolt below.

• Nova Series Users Manual

  For Thunder Laser USA support please email support@thunderlaserusa.com

• Aurora Series Wiring Diagram v8.4

  Please see attached. These are for the V1 Auroras that do not have a Keyed switch on the front.

• Aurora 2.0 Series Wiring Diagram TL Timer v9.3

  Aurora 2.0 Schematics: Page 1 Main power layout: Page 2 Source and AF wiring: Page 3 Source and AF wiring: Page 4 Source and AF wiring: Page 5 Source and AF wiring: Page 6 TL Timer wiring: