Questor share tip: Dialight still shines despite warning on LED lights The lighting division represents 51pc of our 2013 forecasts and is expected to increasingly dominate Dialight's profits over time. He revised his H1 profit estimate to £5.3m, from £7.3m before Tuesday's trading statement, also taking a £3m investment in expanding the sales effort into account. Dialight said the second half of the year, when it makes most of its sales, should ensure annual performance is broadly in line with expectations. Sales of obstruction lights should also recover, although predicting the timing of large mobile phone mast contracts remains a challenge. They need to be won soon, having already suffered delays to delivery on 2013 sales targets. Overall though, despite the tricky news, Dialight looks set to continue its strong growth in the medium term. The company is trading on a price-earnings ratio of 25.2, falling to 20.0 next year. Yield is expected to increase from 1.2pc this year to 1.5pc next year. Those positive trends are expected to continue over the next few years, driven by Dialight's lighting business, as LED technology currently has only 1pc market penetration. Hold.