1. Input voltage: DC 6V–30V 2. Receiving frequency: 433 MHz 3. Standby current: 5 mA 4. Compatible chip: EV1527 5. Receiving sensitivity: -108 dBm 6. Remote control range: 20–50 meters 7. Operating modes: Momentary, toggle, latching, dual momentary + dual latching, dual latching + dual toggle, dual momentary + dual toggle (all selected via controller buttons) 8. Relay terminals: NO (normally open), COM (common), NC (normally closed) 9. Operating temperature: -15°C to 75°C 10. Modulation method: ASK Terminal assignments: 1. +V — Positive power supply input 2. GND — Negative power supply input 3. Relay 1: NO, COM, NC 4. Relay 2: NO, COM, NC 5. Relay 3: NO, COM, NC 6. Relay 4: NO, COM, NC Color: As shown in image Material: ABS Package includes: - 1 x Relay module - 2 x Remote controls Note: Colors may vary slightly due to screen settings and lighting conditions. Measurement tolerance: ±1–3 cm.