The Dahua Input Expander delivers reliable wireless zone expansion with advanced security features, making it ideal for modern alarm systems. Designed with compact housing and long-range communication, it ensures seamless integration, enhanced monitoring, and dependable performance for residential and commercial applications. Key Features : Wireless Zone Expansion: 1-channel dry contact input for extending alarm system capabilities Long-Range Communication: Up to 1000m open space transmission with stable two-way communication Advanced Security: AES128 encryption with frequency hopping for secure data transmission Smart Monitoring: Tamper alarm, low battery alert, and signal strength detection for system reliability Cloud Upgrade Support: Remote firmware updates for improved performance and maintenance Energy Efficient: Powered by CR123A battery with up to 4 years battery life Compact Design: Lightweight and easy bracket mounting for flexible installation Specifications : Material: PC + ABS casing Frequency: 433.1 MHz – 434.6 MHz Communication Distance: Up to 1000m (open space) Encryption: AES128 Input: 1-channel dry contact Indicators / Controls: Green alarm indicator, power button Power Supply: CR123A battery Power Consumption: Max 70 mW Battery Life: Up to 4 years Installation: Bracket mount Operating Temperature: –10°C to +55°C Dimensions: 100.2 × 20.8 × 20.3 mm Weight: 70g Certification: CE