Description: Use with EviroAlert EA800 base station for long distance wireless transmissions from hard-wired sensors reducing need cost and difficulty of hard-wired installations. Discount Sale: USD 114.16 Price: USD 121.57 and you save USD 7.41. We are "the Internet Affiliate", is an independent contractor for the vendor, and is providing internet affiliate services to the company via the internet for which we may earn financial compensation from vendor.