Solar motion sensor lights

Sensor operation is what makes small solar lights practical: instead of burning steadily all night, a sensor light watches its field and answers movement with light — the exact standby and output behaviour is set by each model's modes, which the records list by number and which buyers confirm per model. The catalogue uses two sensing technologies. PIR (passive infrared) models detect body heat movement; radar models detect motion through microwave sensing and appear in the corridor line. This page covers the recorded sensor models and how to choose between the technologies.

The PIR wall formats

Two wall lights carry PIR-class sensing. The solar PIR sensor wall light (IP65, SMD 2835, 270° beam) works in three modes at 6000 K. The solar PIR security wall light (model PY-100LED) is the output-led version: 100 LEDs, a monocrystalline panel (5.5 V, 1.43 W), an 18650 battery (3.7 V, 2200 mAh) and 110-LED and 114-LED variants also listed in its record. The three-head 74 LED wall light adds coverage: three heads, three lighting levels and a 3.7 V 1200 mAh battery for wide yards and corners.

Sensing technologies in the range	PIR (wall/security models); radar (corridor models)
Modes	3 modes / 3 lighting levels across the sensor wall range
Security model panel	Monocrystalline silicon, 5.5 V / 1.43 W
Security model battery	18650 lithium, 3.7 V / 2200 mAh
Three-head model	74 LEDs, 3.7 V / 1200 mAh, IP65

Radar sensing in the corridor line

Radar sensing shows up indoors in the catalogue: the solar corridor bulkhead light (PY-LS05) combines a light sensor with a radar motion sensor, a LiFePO4 20 AH battery bank and remote control — a fit-and-forget fitting for corridors and stairwells in off-grid buildings. A dedicated solar radar sensor corridor light is also catalogued. Radar detects through non-metallic covers and is less affected by temperature extremes than PIR, which is why it suits enclosed fittings; PIR remains the economical choice for open wall mounting.

PIR or radar: a buyer's shortlist

Exterior wall, gate or yard: PIR wall or security formats — direct line of sight to the approach path.
Enclosed fitting or corridor: radar formats, which sense through the diffuser.
Coverage problem (corner, wide yard): three-head PIR format before adding more fittings.
Confirm detection range and mode logic per model at quote stage; the records summarise modes rather than detailing each one.

Do sensor lights also work dusk-to-dawn?

The records list three modes on the wall models without defining each one. Whether a steady dusk-to-dawn mode is included is a confirmation item — ask for the exact mode set of your chosen model when ordering.

Which sensor model is brightest?

By LED count and battery size, the PY-100LED security format (with 110/114 LED variants) is the output-led option; the landscape and wall formats trade output for coverage and runtime.

False triggers and how layouts avoid them

Most sensor-light complaints are layout complaints. A PIR fitting aimed across a road will light for every passing car; one mounted beside a heat vent or an air-conditioning exhaust will trigger on warm air; one watching a tree line will work overtime on windy nights. The fixes are free and happen at fixing time: aim the sensor field at the approach path and nothing else, keep the field clear of heat sources and moving vegetation, and use the three-head format to shape coverage around corners instead of widening a single sensor's stare. Radar formats sidestep some of this — they read motion rather than heat — but they can sense through thin partitions, so in corridor use the field should be checked against the rooms behind the wall. A five-minute walk-test at fixing time, adjusting the head angles, settles all of it before the programme ships.