Voters approved the addition of a new emergency radio network as part of the South King Fire and Rescue Proposition No. 1, which got 57 percent of the vote in the April 28 special election.

About 42 percent, or 6,517 voters, rejected the measure.

Passage means about 630 new radios for Renton’s first responders and more reliable communications. Voters approved the property tax increase of 7 cents per $1,000 of assessed value it will take to support the new network, which is estimated to cost $240 million. It works out to be about $2 a month for an averaged-priced home in King County.

The radios are used by emergency personnel and other government agencies, such as schools and public works, and the communications systems used in the dispatch centers, including the regional dispatch center, Valley Communications in Kent.

Voters met the minimum voter turnout required with 16,303 ballots returned, surpassing the 14,356 voter requirement.