Single Product

Self-Powered Wireless Doorbell With 38 Chord Ringtones & 4-Level Volume Levels Self-Powered Transmitter & Receiver 100 Meters Open Range ZFD21A Features: 38-chord ringtones are designed to be loud and clear for an optimal user experience Non-toxic and harmless to health. Compliance with EU RoHS and PAH standard requirements, ensuring environmental and health safety Constructed with brand new ABS raw material for durability and longevity. Stable performance guaranteed by imported chips and Surface Mount Technology (SMT) craft Produced and tested under directive requirements of CE (Conformité Européenne) and FCC-ID, attesting to product quality and regulatory compliance Fashionable and exquisite appearance for a modern and stylish look Eco-friendly design with a low carbon footprint. Low radiation and ultra-low power dissipation contribute to environmental sustainability One receiver can be paired with up to five emitters, providing flexibility in usage. One emitter can be paired with a receiver, allowing for a customizable and adaptable system Specifications: Model: ZFD21A Receiver input voltage: AC100V-240V Receiver power dissipation: ＜ 0.3W Ring tone grade: 80 dbA Receiver sensitivity: 110 110dbm Emitter button stroke: 3.2mm Emitter button pressure: 3-4N Emitter service life: 200,000 times Emitter power dissipation: 10 nw Wireless frequency: 433.9MHz Modulator type: ASK Effective remote distance in open area: ≤100m Operating temperature range: -20℃~70℃ Transmitter size: (L8.2x W4.6 x H2) Cm Receiver size: (L8.5 x W4.9 x H3) Cm Package Included: 1 x Transmitter 1 x Receiver 1 x Double-Sided Patch 1 x Bracket 1 x Sticker 1 x Srew Pack 1 x User Manual