Secware Posted February 12, 2020 Posted February 12, 2020 I am replacing old ones of these. On the existing Optex EX-35R units is a sticker 869Mhz When I get these new ones, howh do I 'pair' it to the existing old Tunstall control unit, or how do I set the frequency to 869Mhz? Cheers in advance. Quote
Secware_Tech6 Posted February 12, 2020 Posted February 12, 2020 The ex35r is just a sensor the rf transmitter is seperare and usually fitted behind the sensor. Quote
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