Car Alarm System (PKE-003) is a fine piece of technology.
PKE means Passive Keyless Entry system. We intergrate PKE technology for existing traditional One-way alarm so that users do not need to take remotes and also do not worry about being stolen by a RF jammer.

Product performance:
3 unique antenna design, all-round smart sensors.
Auto-sensing unlock.
Leaving the auto-lock.
Remote ignition start, can be pre-open air-conditioning (optional).
Automatically or a window function (optional).
Smart anti-theft security.
Contains the RKE function.

Specifications:
LF actual distance of ≈ 1.8m
LF power for launch ≤ 120mA @ 12V (peak)
Host operating voltage: DC10.0V --- DC15.0V
The smart key operating voltage: DC2.0V --- DC4.0V
Intelligent sleep key ≤ 4uA @ 3V
LF = 134.2KHzUHF = 433.92MHz
Operating temperature: -40 --- +85 
Key fobs size: 79*44 *7.0 (mm)