Wetting Booth(single spray gun)
 
Series SFS-600 SFS-900 SFS-1200
No. of Spray gun 1 2 2
Wetting Booth
(Dual spray gun with temperature detector)

In general, single spray gun working at normal temperature. However, 2nd spray gun will spray once biscuit has over the estimated temperature. This way can average the biscuit temperature before glaze.