This infrared doorbell detector provides reliable visitor detection with flexible installation and clear audible alerts. It is designed for consistent day and night operation and minimal false alarms. Key benefits Accurate detection: Fully automatic infrared sensing with strong sensitivity. Designed to detect visitors reliably without being affected by ambient light, so it works equally well during daytime and at night. Low false alarms: detection precision reduces nuisance triggers, improving trust in alerts and avoiding unnecessary disturbances. Flexible power options: Can be used plugged in or powered by battery for locations without a nearby outlet. Installation can be wired or standalone depending on need. Adjustable placement: Swivel bracket allows easy angle adjustment. Unit can be placed standing or fixed to a wall to target the monitoring area. Clear audible alerts: Built in speaker delivers welcome loudness of 85±5 decibels for noticeable chimes and alerts in small to medium areas. Important attributes Function: Passive infrared motion sensing for doorbell and entry monitoring. Performance: sensitivity and immunity to light interference for dependable detection day and night. Installation: Dual power modes plug in or battery plus swivel bracket for flexible mounting options. Size and build: Compact housing for discreet placement in homes or small businesses. Compatibility: Suited to doorbell monitoring and general entry detection setups where a standalone or powered sensor is required. Use scenarios Home front door: Mount by the entry or place on a porch shelf to detect visitors and trigger the chime during day or night. Small business reception: Install near the entry to alert staff when customers arrive while minimizing false alarms from movement outside the doorway. Garage or gate: Use battery power to position the detector where no outlet is available and angle the bracket to cover the approach path. Quick specifications Sensor type: Fully automatic infrared sensing Sensitivity: Strong, precision detection Light immunity: Not affected by ambient light Power: Plug in or battery powered Mounting: Swivel bracket for wall fixing or placement Speaker output: Welcome loudness 85±5 decibels This detector is intended to provide dependable detection, flexible installation, and clear alerts for everyday doorbell and entry monitoring needs.