![HONEYWELL ™ Universal Door / Window Transmitter [5816H]](http://en-shop.sysaway.com/cdn/shop/products/5816H_grande.png?v=1618317963)
Reference:
5816H
Universal door / window transmitter. 2 programmable channels "built-in reed" and terminal for external connection. Report low battery in advance. Frequency 868.95MHz.