Technical documentation for this legacy-compatible system identifies a GSM module operating on the 850/900/1800/1900MHz bands. The sensor network utilizes unencrypted 433MHz RF, which lacks a bi-directional handshake for device health monitoring. Material analysis of the hub confirms a physical keypad interface and a 110dB wired siren output. An internal 3.7V Lithium-Ion battery provides approximately 4 to 6 hours of standby capability.
Standardized specifications include:
- Communication: 2G GSM (Legacy).
- Interface: Physical tactile keypad.
- Sensor Type: Unidirectional 433MHz peripherals.
Performance metrics indicate that remote alert functionality is contingent upon the availability of 2G cellular infrastructure. In regions where carriers have initiated network sunsets, the device functions primarily as a local audible deterrent. Technical specifications suggest upgrading to hardware with Wi-Fi or 4G LTE modules to maintain remote monitoring capabilities.
A transition to the YBJ 21-Piece WiFi Kit is advised for users requiring modern Wi-Fi connectivity and higher sensor counts. This legacy-style unit is listed under the pre-packaged DIY alarm kits hardware class.
