Please check good frequency 433.9mhz for your system

It is not safe to send a picture of a sticker of any part of the system

Visonic MCT-234 Wireless Mini Key Fob Transmitter - 433.9 MHz 

Advanced Wireless Security for PowerMax Systems

Wireless Code Secure Key Fob Transmitter

Features

• Four independent functional buttons

• Comfortable, miniature, attractive design

• Superior transmission range

• Code Secure encryption technology prevents unauthorized "code grabbing"

• Code Secure ID factory-selected from over 100 million possible code combinations

• Standard Alkaline battery

• Visible and transmitted low battery indication

• Available in several optional frequencies in compliance with international standards

• Compatible with PowerMax® and all Visonic Power Code wireless panels and receivers operating on 433MHz

MCT-234 is a 4-button miniature wireless Code Secure key fob transmitter designed for arming and disarming wireless security systems, and for emergency signalling, access control, home automation and remote control applications.

When activated, each button initiates a Code Secure transmission of a unique 28-bit (rolling code) ID command, selected from over 100 million possible combinations. To prevent "code grabbing" by potential intruders trying to defeat the security system, the next time the button is activated, the transmitter sends out a different Code Secure ID, which is selected by a proprietary code encryption algorithm and which can be recognized only by the target receiver.