Features: Using a password, if an accident is triggered or something happens, you can always enter the password directly through the panel keys to stop the call. 100% error-free, seven digits can be displayed on the panel, indicating the top or key echo, directly detect the input of the phone number and help the voice correct. The microcomputer can automatically record the voice IC within 20 seconds, directly record or send a 20-second voice message through the microphone and speaker of the machine without the need for another phone. There is a pause and switchboard automatic transfer extension function, the pause time is selected according to the switchboard waiting time, 2, 4 or 6 seconds, directly set by the panel button. The use of highly reliable ICs reduces the number of discrete devices and uses a double-layer circuit board. The structure is more concise and the quality performance is more stable. Specification: Operating voltage: 12V Alarm receiving mode: dialing Wireless reception frequency: none (MHz) Alarm Horn Sound: None (dB) Voice recording length: 20 (S) Save the phone number: 4 (s) Phone number Bit length: 16 (bit) Product Size: Approx. 14 * 3 * 9cm / 5.5 * 1.2 * 3.5in Package Weight: Approx. 258g Package Included: 1 x Telephone Voice Dialer (with mounting accessories) You can select N, CN, O or voltage input trigger signal according to different host requirements. Can be used with the world anti-theft host, or with a variety of inCan store 4 groups of phones or mobile phones, each group of up to 16 digits and two levels of passwords. ependent sensor, in the situation immediately dial for help Can be selected according to different host requirements N, C N, O Can be used in conjunction with the world's anti-theft host, or with a variety of independent sensors, immediately call for help in case of emergency. or voltage input trigger signal Microcomputer design, visible, audible, recordable, can put all-round automatic dialing help. All-round start-up, self-detection function, to prevent the occurrence of failures.