ID with codes for location and direction

No battery or adapter for Landmark.

Easy extension of application range

Landmark Types and application:
(1) HLD1: 3 X 3 combination, total 31 ea, for general application
HLD1-1: 1.2 m ≤ Height ≤ 2.7 m
HLD1-2: 2.7 m ≤ Height ≤ 4.0 m
HLD1-3: 4.0 m ≤ Height ≤ 6.0 m
HLD1-4: 6.0 m ≤ Height ≤ 15 m

(2) HLD2: 4 X 4 combination, total 4095 ea, for very large area with several offices
HLD2-1: 1.2 m ≤ Height ≤ 2.7 m
HLD2-2: 2.7 m ≤ Height ≤ 4.0 m
HLD2-3: 4.0 m ≤ Height ≤ 6.0 m
HLD2-4: 6.0 m ≤ Height ≤ 15 m