Grandstream DP752 DECT VoIP Base Station, 10 SIP, up to 5 Phones, Black//Pairs with up to 5 of Grandstream’s DP series DECT handsets via instant pairing using a dedicated pairing buttonUp to 10 SIP accounts per system; up to 10 lines per handsetSupport outdoor range of up to 400 meters with the DP730 or up to 350 meters with DP722/DP720 as well as indoor range up to 50 metersSupports Push-to-Talk and activity based on proximity and accelerometer sensorsAutomated provisioning options include TR-069 and XML config fileshttps://www.grandstream.com/products/ip-voice-telephony/dect-cordless/product/dp752