... automatic door and gate. Safety Beams(Microcell beams)(Model:WS-210)WS-210 is a miniature photo electric safety thru-beam ... heads which can be pulled out ,with a 5 m cable and a control box fitted with a relay;Microcell ... heads which can be pulled out ,with a 5 m cable and a control box fitted with a relay;Microcell ... heads which can be pulled out ,with a 5 m cable and a control box which can be monitored, ...