Remote Control micro electric bicycle anti-theft alarm security system.?

Features:?
Waterproof host.?
Special design for electric bicycle. Stable performance.?
Alarm function. Anti-theft security alert.?
High-decibel horn alarm function.?
Remote control start￡? turn off function.?

Specifications:?
Compatiable with: for electric bicycle?
Power: 48-64V?
Applicable range: ??100 meters?
Host size: 6.5 * 5.7 * 2.2cm / 2.6 * 2.1 * 0.9in?
Package size: 22 * 17.5 * 4cm / 8.3 * 6.9 * 1.6in?
Package weight: 197g / 6.9oz?

Package List:?
1 * Alarm?
2 * Remote Control(within button battery)?
1 * Fastener Tape