1. Build-in repair recording software system.
2. LED indication for tilt direction.
3. Apply Sanyo, Japan, L.D.
4. Anti dust and anti water IP-54.
1. Beam: 4V1H1D. 2. Power supply: 4xAA alkaline batteries/ rechargeable batteries/ AC adaptor. 3. Mounting thread: 5/8" x 11, ISO standard. 4. Instrument size: Ø110x205mm. 5. Instrument weight: 1.4kg (including batteries).