ABS enclosures with two 1 mm aluminium panels. Each half-shell has integral PCB guides and mounting studs. Matt surface finish. The models “242” and “243” have a 45° inclined display area. The models “242/O” and “243/O” have two cutouts in the recessed areas. Closing by only two screws. Upon request dark gray ABS panels (Mod. PP11, PP12, PP22, PP222, PP223, PP233). Dual miniature clip for 9V battery (AB9).