Features:
1) 27MHz radio frequency, single channel
2) With the optical technology, the motion can be detected on most surfaces,
including wood, plastic, paint
3) Auto smart sleep and wake-up function and lower working current
4) Operating range: 1.8m in normal environment
5) 800dpi hardware resolution
6) USB receiver with recharge function

Specifications:
1) Optical sensor
2) Working current: 22mA
3) Tracking speed: 435mm/s
4) Working voltage: 3V
5) Switch life: 5 millions
6) Switch force: 60±0.15g
7) Switch resistance: >100MΩ
8) Size:
a) H-517: 122 x 73 x 43mm
b) H-519: 125 x 73 x 43mm

Inner packing:
Color box with blister packing

Outer packing:
20pcs/ctn, or according to customers' requirements