Product Description
Industrial embedded control board for 24V signal I/O and MOSFET switching. Interfaces directly with standard 24VDC PLC outputs, industrial sensors, and switching loads. The GS-100 reads 24V signals and drives MOSFET outputs under firmware control with wireless capability via the onboard ESP32-C6-MINI-1 module.
Replace electromechanical relays with solid-state MOSFET outputs. Add remote monitoring capability to PLC I/O. Build standalone sensor hubs. The board drops into standard industrial wiring with screw terminals and familiar M12 cable colors.
Contains FCC ID: 2AC7Z-ESPC6MINI1 — RF functionality (Wi-Fi 6, Bluetooth LE 5, 802.15.4) is available via user-developed firmware.
Key Specifications
| Parameter | Value |
|---|---|
| Input Supply Voltage | 24VDC ±10% (21.6–26.4V) |
| Regulated Rails | 5.0V (buck) → 3.3V (LDO) |
| Signal Inputs | 3 channels, 0–28VDC range |
| MOSFET Outputs | 3 channels, 100V VDS max, 17A ID max |
| Sensor Inputs | 2 channels, 12-bit ADC |
| Configuration | 9× DIP switches via I²C expander |
MCU Specifications — ESP32-C6-MINI-1
| Parameter | Value |
|---|---|
| Processor | RISC-V single-core, 160MHz |
| Memory | 4MB Flash, 512KB SRAM |
| Wireless | Wi-Fi 6 (802.11ax), Bluetooth 5 LE, 802.15.4 |
| USB | Type-C (USB 2.0 Full Speed) |
| FCC ID | 2AC7Z-ESPC6MINI1 |
Environmental
| Parameter | Value |
|---|---|
| Operating Temperature | −20°C to +70°C |
| Storage Temperature | −40°C to +125°C |
| Humidity | 5–95% RH (non-condensing) |
Mechanical
| Parameter | Value |
|---|---|
| Dimensions | 90 × 55 mm (3.54 × 2.17 in) |
| Connectors | 5.08mm pitch screw terminals |
| PCB | 2-layer, lead-free HASL finish |
| Mounting | No mounting holes — secure via enclosure or DIN-rail carrier |
Features
- Multi-Protocol Wireless Capability — Wi-Fi 6, Bluetooth LE 5, and 802.15.4 (Zigbee/Thread) via user firmware
- 3× 24V Signal Inputs — MOSFET-based level translation, active-low logic
- 3× MOSFET Outputs — N-channel low-side switches, 5A recommended continuous per channel
- 9× Configuration DIP Switches — Define operating modes without reprogramming
- 2× Industrial Sensor Inputs — 24V NPN proximity/capacitive sensor compatible with ADC
- On-Board Power Management — 24VDC input, no external regulators required
- USB Type-C Programming — Program and debug via USB-C, 5V bench power supported
- Status LEDs — 5 green indicators for power and output activity
Typical Applications
- PLC I/O expansion with wireless monitoring
- Relay replacement for solenoid valves and indicator lights
- Industrial sensor hubs with remote connectivity
- Machine monitoring systems
- Automation retrofits
Compatible PLCs
Tested with AutomationDirect Click CO-00DD2-D. Compatible with Click PLUS, BRX series, Siemens S7-1200 DC/DC/DC, Allen-Bradley Micro850/870, Schneider M221/M241, Mitsubishi FX5U, Omron CP1L/CJ, and IDEC MicroSmart FC6A. Requires 24VDC sourcing (PNP) transistor outputs.
Regulatory & Compliance
| Requirement | Status |
|---|---|
| RoHS 3 | Compliant — Directive 2011/65/EU + Delegated Directive (EU) 2015/863 |
| Component Selection | All components specified as RoHS-compliant |
| PCB Finish | Lead-free HASL |
| Solder Paste | SAC305 (Sn96.5%, Ag3.0%, Cu0.5%) |
| Third-Party Testing | Not performed — compliance based on component specifications and manufacturing process |
| FCC | Contains FCC ID: 2AC7Z-ESPC6MINI1 |
FCC Regulatory Notice: This product contains an FCC-certified ESP32-C6-MINI-1 module (FCC ID: 2AC7Z-ESPC6MINI1). The RF transmitter is not active as shipped. Activation of wireless functionality requires user-developed firmware. System integrators enabling wireless features in end products are responsible for ensuring final product compliance with applicable FCC regulations.
Package Contents
- 1× GS-100 24V Relay I/O Board (V1.2)
- Product documentation (PDF download)
Installation & Safety
Intended Use: The GS-100 is a subassembly intended for integration into larger systems by qualified electrical and automation professionals. This product is not a consumer device.
Installation Environment: Must be installed in a properly rated enclosure (NEMA/IP) with appropriate strain relief, cable management, and environmental protection. Enclosure not included.
Thermal Derating: MOSFET outputs rated for 5A continuous at ≤40°C ambient. Derate to 4A at 50°C, 3A at 60°C, 2A at 70°C. Do not operate multiple channels at maximum current simultaneously without thermal analysis.
Exclusions: The GS-100 is not designed, tested, or certified for safety-critical applications, life-support systems, applications requiring SIL-rated components, explosive or hazardous atmospheres, or direct outdoor installation without appropriate enclosure.
Warranty: Warranted against defects in materials and workmanship for thirty (30) days from date of shipment. Warranty does not cover damage from misuse, improper installation, operation outside specified limits, or integration failures.
Limitation of Liability: Gestahl's liability is limited to repair or replacement of defective products. In no event shall Gestahl be liable for incidental, consequential, or special damages arising from product use.
Specifications Subject to Change: Specifications and features are subject to change without notice. Consult current documentation at gestahl.com for latest information.
Part Number: GS-100
Current Version: V1.2
Revision History
| Version | Changes |
|---|---|
| V1.0 | Initial Release |
| V1.1 | Increased MOSFET VDS Limit |
| V1.2 | Improved Header Silkscreens For Clarity |