20 M1 Controls & Accessories Encrypted transmissions, frequency hopping and jamming detection make it virtually impossible to lock on to the signal providing increased immunity to hacking. Every signal from each sensor is acknowledged by the transceiver to ensure reliability. This also stops repeat transmissions, saving battery life. Bi-color LEDs confirm signals have been received, saving installation steps and time. HOW IS TWO-WAY WIRELESS DIFFERENT? UNIQUE PRODUCT FEATURES The convenience of wireless with the SECURITY OF HARDWIRED Smart homes and businesses need more intelligent security. ELK’s Two-Way Wireless products incorporate advanced features to ensure secure transmissions, increase reliability, extend battery life, simplify installation, and provide innovative security enhancements. Meet new fire codes with Sound All™ Smoke Detectors featuring wirelessly activated synchronized sounders Eliminate trips up the ladder and simplify motion detector testing with keypad activated walk test mode and test confirmation with a bright white LED Know if an alarm has been activated before entering with on-demand status inquiry and LED indicator TWO-WAY WIRELESS SECURE, RELIABLE, AND INSTALLER FRIENDLY