X-sense.com [x-sense.com] has a wi-fi smoke detector ranging from (1 pack) 28.8$ utilizing code BFD20 (accessible for all variants). 6 pack is $128. Free transport.
About the product:
Wireless Interconnection
5-Year Replaceable Battery
Complies with UL 217 Standard.
Battery Replacement Reminder
Insect-Proof Design
3 in Mini Design
Easy to put in
https://www.x-sense.com/products/…rm-xs01-wr
