Protection One Inc., a Lawrence-based provider of monitored-security services, on Tuesday posted a net loss of 34 cents per share for the third quarter, reporting an increase in debt attributed to the company’s acquisition of Integrated Alarm Services Group.

Protection One reported a net loss of $8.7 million on revenue of $93.5 million for the quarter, compared with a loss of $3.5 million, or 19 cents per share, on revenues of $67.6 million during the third quarter of 2006.

Richard Ginsburg, Protection One’s president and CEO, said that the company’s commercial accounts were doing better than residential efforts, reflecting the sluggish housing market nationwide.