Details：
Handset mode, ordinary telephone usage; RJ11 interface, built-in power adapter, AC220V power supply; when the called party is ringing, the loudspeaker will ring; support sound and light alarm, called state warning lights flashing, alarm ring work; support 3 groups of speeds Dial the key, you can realize one-key dialing after lifting the handset; compatible with various digital or analog program-controlled switches, and IAD gateway equipment; support automatic detection of busy tone and automatic answering of the called ring
Details：
Handset mode, ordinary phone use; RJ11 interface, built-in power adapter, AC220V power supply; support sound and light alarm, called state warning light flashes, alarm ring work; support 3 groups of speed dial keys, can realize one-key dialing after lifting the handset; Compatible with various digital or analog program-controlled switches, and IAD gateway devices; support automatic detection of busy tone, automatic hang-up, and automatic answering of called ringing; support external explosion-proof speakers and explosion-proof warning lights
Details：
Handset mode, ordinary phone usage; RJ11 interface, built-in power adapter, AC220V power supply; when the called party rings, the loudspeaker will ring; support 3 sets of speed dial keys, one-key dialing can be realized after lifting the handset; compatible with various numbers Or analog program-controlled switchboard, and IAD gateway equipment; support automatic detection of busy tone, automatic hang-up, and automatic answering of called ringing; support external explosion-proof speakers and explosion-proof warning lights
Details：
Handset mode, ordinary phone usage; RJ11 interface, built-in power adapter, AC220V power supply; support 3 sets of speed dial keys, one-key dialing can be realized after lifting the handset; compatible with various digital or analog program-controlled switches and IAD gateway devices; support detection Busy tone automatically hangs up, and the called party rings automatically answering the function; supports external explosion-proof speakers and explosion-proof warning lights
Details：
Hands-free mode, ordinary phone use; RJ45 interface, can support POE; POE or DC12V power supply; when the called party rings, the loudspeaker will ring and the warning light will flash; support speed dial function, 4 groups of one-key dialing; WEB page Registration configuration, automatic answer, hotline number, do not disturb, etc.; compatible with various SIP protocol IPPBX, support alarm broadcast video trigger linkage
Details：
Handset mode, ordinary phone usage; RJ45 interface, can support POE; POE or DC12V power supply; when the called party is ringing, the loudspeaker will ring and the warning light will flash; support speed dial function, 3 groups of one-key dialing; WEB page registration Configuration, automatic answer, hotline number, do not disturb, etc.; compatible with various SIP protocol IPPBX, support alarm broadcast video trigger linkage
