DS-PDMCX-E-WE Review
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DS-PDMCX-E-WE Hikvision Wireless External Magnetic Contact
Hikvision Wireless external Magnetic contact, Opening contact detection Method, 76 mm Max detection gap, Tri-X Wireless transmission Technology, Two-Way RF Wireless, 868MHz transmission Frequency, 1.6km transmission range (Free space), Up to 5 years (Standby time) standard Battery Life, Frequency hopping against jamming