Quick view Choose Options Alarm Controls RT Series, Wireless Transmitters and Receivers - Alarm Controls MSRP: Was: $38.00 Now: $25.44 - $129.88 Wireless remote transmitters allow access control for up to three doors from one device. Ideal for front desk/reception applications or hard… California Prop 65 Warning WARNING: This product can expose you to chemicals including Nickel, which is known to the State of California to cause cancer. For more information, go to www.P65Warnings.ca.gov.