16A Multifunction Time Relay with 10 Function Choices - Compact DIN

In this review of the 16A Multifunction Time Relay (GRT8-M2) the bottom line is straightforward: this compact DIN-rail relay is for technicians and hobbyists who need a flexible, space-saving timer with a wide range of timing modes. The single biggest reason to buy is its versatility - ten selectable functions and a broad time scale from 0.1 seconds to 10 days make it useful across industrial control, lighting, and automation tasks. The relay is small enough for dense panels yet offers a clear LED status indicator and easy rotary switches for setting functions and ranges.

Key Features

• Ten selectable functions: Five timing modes triggered by supply voltage and four by control input plus a latching option give real flexibility in one module.
• Wide time scale: The 0.1s to 10 day range, divided into 10 bands, covers short pulses to long delays without extra modules.
• Compact DIN-rail form factor: At only 18mm wide and 35mm rail depth it saves panel space and fits crowded control cabinets.
• Clear operator controls: Rotary switches and a potentiometer make the function and time-range settings quick to change without removing the unit.
• Power and output options: Works across AC/DC 12V to 240V supply ranges and offers robust 16A SPDT or 2SPDT outputs for common loads.

Who It's For

The relay is best suited to electricians, system integrators, and advanced DIYers who need a compact, multi-mode timer for lighting sequences, motor delay protection, or simple automation tasks. Its small footprint makes it ideal where panel space is at a premium and multiple timing behaviors are required without multiple devices.

It may be less appropriate for users who require ruggedized enclosures for harsh outdoor environments or those who need very intuitive step-by-step printed documentation; some buyers report that the instructions can be terse, so novices who want plug-and-play simplicity might prefer a module with more hand-holding support.

Pros & Cons

Pros

• Very versatile set of time functions that handle many control scenarios in one unit.
• Ultra-small size reduces panel footprint and simplifies dense installations.
• Easy local adjustment with rotary switches and a potentiometer for precise timing.
• Strong basic output capability with 16A contacts suitable for many loads.

Cons

• Instruction clarity varies; some users find the documentation cryptic when first programming functions.
• Durability reports are mixed, so long-term heavy industrial use should be assessed case by case.

Specifications

Model	GRT8-M2 (16A, 2SPDT)
Power supply	AC/DC 12V~240V
Functions	10 multifunction choices (5 by supply, 4 by control input, 1 latching)
Time scale	0.1s to 10 days in 10 ranges (set by potentiometer)
Output rating	16A SPDT or 2SPDT
Mounting	35mm DIN rail, 18mm width
Indicator	LED relay status

Our Verdict

The 16A Multifunction Time Relay is a practical, value-oriented choice for anyone needing a compact, multi-mode timer for panel-mounted control tasks. It packs a broad set of timing options and a wide supply voltage range into an ultra-small package, making it good value for installations that require flexibility and space savings; just be mindful of the terse instructions and evaluate longevity for heavy-duty environments.

Frequently Asked Questions

Can the relay be used on both AC and DC supplies?
Yes; the unit supports AC/DC 12V to 240V, so it works with a wide variety of control supplies.

How is the timing set?
Timing is selected by a rotary time-range switch and adjusted within that range using the potentiometer, with ranges from 0.1s to 10 days.

What output contacts does it have?
The GRT8 series offers 16A outputs as either 1SPDT or 2SPDT depending on the model; GRT8-M2 is the 2SPDT version.