| Single-Channel Relay Kit | 315 MHz or 433.92 MHz | 30–100 m in open space | 1 | 12 V DC or 24 V DC | One relay output; usually rated up to 10 A resistive load | Learning-code or fixed-code pairing; check local frequency regulations | Gate triggers, lighting control, small pumps, access equipment | Suitable for entry-level orders; confirm relay rating, enclosure quality, and receiver standby current |
| Two-Channel Relay Kit | 315 MHz or 433.92 MHz | 30–100 m in open space | 2 | 12 V DC or 24 V DC | Two independent relay outputs; momentary or toggle modes | Remote learning is common; some receivers support multiple transmitters | Dual-door control, two lighting circuits, shutters, and small automation systems | Good general-purpose SKU; verify whether channels can operate independently or simultaneously |
| Four-Channel Relay Kit | 315 MHz, 433.92 MHz, or 868 MHz | 50–150 m in open space | 4 | 12 V DC or 24 V DC | Four relay outputs; commonly configured as momentary, toggle, or latching | Rolling-code or learning-code versions are available | Multi-zone lighting, motorized curtains, gates, barriers, and equipment switching | Prioritize clear channel labeling, overload protection, and compatibility with the target market |
| Six- to Eight-Channel Automation Kit | 433.92 MHz or 868 MHz | 50–150 m in open space | 6–8 | 12 V DC or 24 V DC | Multiple relay outputs; output limits vary by model | Usually learning-code; some models include memory for several transmitters | Industrial control panels, multiple shutters, lighting groups, and access systems | Best for specialized buyers; request wiring diagrams, channel logic, and installation documentation |
| Long-Range RF Kit | 433 MHz, 868 MHz, or 915 MHz | 150–1,000 m in open space, depending on antenna and environment | 1–4 | 9–24 V DC | Relay or transistor output; load capacity depends on the receiver design | Rolling-code or encrypted pairing is preferred for access-related applications | Large properties, agricultural equipment, warehouse doors, and remote machinery | Confirm tested range rather than advertised maximum; antenna placement has a major effect on performance |
| Water-Resistant Outdoor Kit | 315 MHz, 433.92 MHz, or 868 MHz | 30–150 m in open space | 1–4 | 12 V DC or 24 V DC | Sealed or protected relay receiver; output rating varies by model | Learning-code or rolling-code pairing | Outdoor gates, barriers, irrigation controls, garage doors, and landscape lighting | Check the complete assembly rating, including remote buttons, receiver housing, cable glands, and antenna connection |
| Industrial Heavy-Duty Kit | 433 MHz, 868 MHz, or application-specific sub-GHz bands | 100–500 m in open space | 2–12 | 12–48 V DC or 24 V AC/DC | Relay, open-collector, or industrial control outputs with electrical isolation options | Rolling-code or encrypted communication is recommended for safety-sensitive systems | Hoists, cranes, conveyors, pumps, industrial doors, and machinery controls | Require load testing, electrical isolation details, emergency-stop provisions, and installation certification where applicable |
| Smart-Home Retrofit RF Kit | 315 MHz, 433.92 MHz, or 868 MHz | 20–80 m indoors; more in open space | 1–4 | 5 V DC, 12 V DC, or 24 V DC | Low-voltage relay or dry-contact output | Learning-code pairing; gateway compatibility depends on the protocol | Retrofit lighting, blinds, fans, garage doors, and low-voltage automation | Confirm protocol compatibility, app or gateway requirements, standby power, and neutral-wire requirements |