1/1
Doorbell Alarm PCBA – 2‑Way Intercom, Motion Detection, Tamper Alert & Wireless Chime for Home Security
No.YQQX041
- 2‑Way Audio Intercom – Built‑in microphone amplifier (electret mic) and speaker driver (0.5‑2W). Echo cancellation and noise filtering for clear conversation. Supports half‑duplex or full‑duplex (depending on MCU capability).
- Motion Detection (PIR) – Passive infrared sensor input with adjustable sensitivity (3‑8 meters range) and time delay (5‑60 seconds). Triggers chime, LED flash, or relay output. Optional camera module interface for video recording upon motion.
- Tamper & Intrusion Alerts – External micro‑switch input (tamper spring) – triggers loud alarm (85‑95dB) when cover removed. Door/window magnetic reed switch input for intrusion detection (alarm sounds when door opened without authorisation). Alarm memory logs last tamper event.
- Wireless & Wired Expansion – 433MHz (or 2.4GHz) RF receiver for pairing wireless doorbell buttons, window/door sensors, and remote controls. Up to 8‑10 wireless zones. Wired inputs: doorbell button (dry contact), tamper, motion sensor, and door contact.
- Acoustic & Visual Indicators – Selectable chime melodies (8‑16 tones) via button or DIP switch. Volume control (off/low/high). RGB LED for status: blue (standby), green (doorbell pressed), yellow (motion detected), red flashing (alarm/tamper). Optional strobe light output.
- Applications – Suitable for: home doorbells with security function, apartment intercom systems, shop entrance alerts (chime when customer enters), perimeter monitoring (motion sensor alerts), DIY home security kits, and elderly/child room monitoring (alert when door opens).
(0 Reviews)
0 Sold
security (alarm).
1/1
